diff --git a/astro.config.mjs b/astro.config.mjs
index 72e4803..759ccbe 100644
--- a/astro.config.mjs
+++ b/astro.config.mjs
@@ -2,10 +2,11 @@ import { defineConfig } from "astro/config";
 import react from "@astrojs/react";
 import tailwind from "@astrojs/tailwind";
 import vercel from "@astrojs/vercel/serverless";
+import mdx from "@astrojs/mdx";
 
 // https://astro.build/config
 export default defineConfig({
-  integrations: [react(), tailwind()],
+  integrations: [react(), tailwind(), mdx()],
   output: "hybrid",
   adapter: vercel({
     webAnalytics: {
diff --git a/bun.lockb b/bun.lockb
index 1e23e2d..ae6969c 100755
Binary files a/bun.lockb and b/bun.lockb differ
diff --git a/learning/datastructures/LinkedList.ts b/learning/datastructures/LinkedList.ts
index 30fbcfd..580ab06 100644
--- a/learning/datastructures/LinkedList.ts
+++ b/learning/datastructures/LinkedList.ts
@@ -1,76 +1,95 @@
-type NodeVal = number;
-class ListNode {
-  val: NodeVal;
-  next: ListNode | null;
-  constructor(value: NodeVal) {
-    this.val = value;
+class MyNode {
+  val: number;
+  next: MyNode | null;
+  constructor(val: number) {
+    this.val = val;
     this.next = null;
   }
 }
+
 class MyLinkedList {
-  list: ListNode | null;
+  head: MyNode | null;
+  length: number;
   constructor() {
-    this.list = null;
-  }
-  valueOf() {
-    return this.list;
+    this.head = null;
+    this.length = 0;
   }
 
   get(index: number): number {
-    let position = 0;
-    let currentNode = this.list;
-    while (position !== index && currentNode !== null) {
-      currentNode = currentNode.next;
-      position++;
+    if (index < 0 || index >= this.length) {
+      return -1;
     }
-    if (position === index && currentNode !== null) {
-      return currentNode.val;
+
+    let current = this.head;
+    for (let i = 0; i < index; i++) {
+      current = current!.next;
     }
-    return -1;
+
+    return current!.val;
   }
 
   addAtHead(val: number): void {
-    let next = this.list;
-    const newNode = new ListNode(val);
-    if (next !== null) {
-      newNode.next = next;
-    }
-    this.list = newNode;
+    const newNode = new MyNode(val);
+    newNode.next = this.head;
+    this.head = newNode;
+    this.length++;
   }
 
   addAtTail(val: number): void {
-    if (this.list == null) {
+    const newNode = new MyNode(val);
+
+    if (!this.head) {
+      this.head = newNode;
+    } else {
+      let current = this.head;
+      while (current.next) {
+        current = current.next;
+      }
+      current.next = newNode;
+    }
+
+    this.length++;
+  }
+
+  addAtIndex(index: number, val: number): void {
+    if (index < 0 || index > this.length) {
       return;
     }
 
-    let currentNode = this.list;
-    while (currentNode.next) {
-      currentNode = currentNode.next;
+    if (index === 0) {
+      this.addAtHead(val);
+    } else if (index === this.length) {
+      this.addAtTail(val);
+    } else {
+      let current = this.head;
+      for (let i = 0; i < index - 1; i++) {
+        current = current!.next;
+      }
+
+      const newNode = new MyNode(val);
+      newNode.next = current!.next;
+      current!.next = newNode;
+
+      this.length++;
     }
-    currentNode.next = new ListNode(val);
   }
 
-  addAtIndex(index: number, val: number): void {}
+  deleteAtIndex(index: number): void {
+    if (index < 0 || index >= this.length) {
+      return;
+    }
 
-  deleteAtIndex(index: number): void {}
-}
+    if (index === 0) {
+      this.head = this.head!.next;
+    } else {
+      let current = this.head;
+      for (let i = 0; i < index - 1; i++) {
+        current = current!.next;
+      }
 
-/**
- * Your MyLinkedList object will be instantiated and called as such:
- * var obj = new MyLinkedList()
- * var param_1 = obj.get(index)
- * obj.addAtHead(val)
- * obj.addAtTail(val)
- * obj.addAtIndex(index,val)
- * obj.deleteAtIndex(index)
- */
-
-const list = new MyLinkedList();
-
-list.addAtHead(2);
-list.addAtTail(5);
-list.addAtHead(1);
-list.addAtTail(7);
-list.addAtTail(9);
-
-console.log(list.get(3));
+      current!.next = current!.next!.next;
+    }
+
+    this.length--;
+  }
+}
diff --git a/learning/multithreaded-javascript/ch1-c-threads/happycoin b/learning/multithreaded-javascript/ch1-c-threads/happycoin
new file mode 100755
index 0000000..44dbc4c
Binary files /dev/null and b/learning/multithreaded-javascript/ch1-c-threads/happycoin differ
diff --git a/learning/multithreaded-javascript/ch1-c-threads/happycoin-threads b/learning/multithreaded-javascript/ch1-c-threads/happycoin-threads
new file mode 100755
index 0000000..2c7f235
Binary files /dev/null and b/learning/multithreaded-javascript/ch1-c-threads/happycoin-threads differ
diff --git a/learning/multithreaded-javascript/ch1-c-threads/happycoin-threads.c b/learning/multithreaded-javascript/ch1-c-threads/happycoin-threads.c
new file mode 100644
index 0000000..7b01bf7
--- /dev/null
+++ b/learning/multithreaded-javascript/ch1-c-threads/happycoin-threads.c
@@ -0,0 +1,86 @@
+#include <inttypes.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <pthread.h>
+
+struct happy_result {
+  size_t count;
+  uint64_t * nums;
+};
+
+uint64_t random64(uint32_t * seed) {
+  uint64_t result;
+  uint8_t * result8 = (uint8_t *)&result;
+  for (size_t i = 0; i< sizeof(result); i++) {
+    result8[i] = rand_r(seed);
+  }
+  return result;
+}
+
+uint64_t sum_digits_squared(uint64_t num) {
+  uint64_t total = 0;
+  while (num > 0) {
+    uint64_t num_mod_base = num % 10;
+    total += num_mod_base * num_mod_base;
+    num = num / 10;
+  }
+  return total;
+}
+
+bool is_happy(uint64_t num) {
+  while (num != 1 && num != 4) {
+    num = sum_digits_squared(num);
+  }
+  return num == 1;
+}
+
+bool is_happycoin(uint64_t num) {
+  return is_happy(num) && num % 10000 == 0;
+}
+
+void * get_happycoins(void * arg) {
+  int attempts = *(int *)arg;
+  int limit = attempts/10000;
+  uint32_t seed = time(NULL);
+  uint64_t * nums = malloc(limit * sizeof(uint64_t));
+  struct happy_result * result = malloc(sizeof(struct happy_result));
+  result->nums = nums;
+  result->count = 0;
+  for(int i = 1; i < attempts; i++) {
+    if (result->count == limit) {
+      break;
+    }
+    uint64_t random_num = random64(&seed);
+    if (is_happycoin(random_num)) {
+      result->nums[result->count++] = random_num;
+    }
+  }
+  return (void *)result;
+}
+
+#define THREAD_COUNT 4
+
+int main() {
+  pthread_t thread [THREAD_COUNT];
+
+  int attempts = 10000000/THREAD_COUNT;
+  int count = 0;
+  for(int i = 0; i < THREAD_COUNT; i++) {
+    pthread_create(&thread[i], NULL, get_happycoins, &attempts);
+  }
+
+  for(int j = 0; j < THREAD_COUNT; j++) {
+    struct happy_result * result;
+    pthread_join(thread[j], (void **)&result);
+    count += result->count;
+    for(int k = 0; k < result->count; k++) {
+      printf("%" PRIu64 " ", result->nums[k]);
+    }
+    free(result->nums);
+    free(result);
+  }
+  printf("\ncount %d\n", count);
+  return 0;
+}
\ No newline at end of file
diff --git a/learning/multithreaded-javascript/ch1-c-threads/happycoin.c b/learning/multithreaded-javascript/ch1-c-threads/happycoin.c
index 662a28a..7d89dd3 100644
--- a/learning/multithreaded-javascript/ch1-c-threads/happycoin.c
+++ b/learning/multithreaded-javascript/ch1-c-threads/happycoin.c
@@ -11,4 +11,39 @@ uint64_t random64(uint32_t * seed) {
     result8[i] = rand_r(seed);
   }
   return result;
+}
+
+uint64_t sum_digits_squared(uint64_t num) {
+  uint64_t total = 0;
+  while (num > 0) {
+    uint64_t num_mod_base = num % 10;
+    total += num_mod_base * num_mod_base;
+    num = num / 10;
+  }
+  return total;
+}
+
+bool is_happy(uint64_t num) {
+  while (num != 1 && num != 4) {
+    num = sum_digits_squared(num);
+  }
+  return num == 1;
+}
+
+bool is_happycoin(uint64_t num) {
+  return is_happy(num) && num % 10000 == 0;
+}
+
+int main() {
+  uint32_t seed = time(NULL);
+  int count = 0;
+  for (int i = 1; i < 10000000; i++) {
+    uint64_t random_num = random64(&seed);
+    if (is_happycoin(random_num)) {
+      printf("%" PRIu64 " ", random_num);
+      count++;
+    }
+  }
+  printf("\ncount %d\n", count);
+  return 0;
 }
\ No newline at end of file
diff --git a/learning/multithreaded-javascript/ch1-c-threads/src/env.d.ts b/learning/multithreaded-javascript/ch1-c-threads/src/env.d.ts
deleted file mode 100644
index 8c34fb4..0000000
--- a/learning/multithreaded-javascript/ch1-c-threads/src/env.d.ts
+++ /dev/null
@@ -1 +0,0 @@
-/// <reference types="astro/client" />
\ No newline at end of file
diff --git a/learning/multithreaded-javascript/ch2-shared-workers/blue.html b/learning/multithreaded-javascript/ch2-shared-workers/blue.html
new file mode 100644
index 0000000..a110ce1
--- /dev/null
+++ b/learning/multithreaded-javascript/ch2-shared-workers/blue.html
@@ -0,0 +1,6 @@
+<html>
+  <head>
+    <title>Shared Workers Blue</title>
+    <script src="blue.js"></script>
+  </head>
+</html>
diff --git a/learning/multithreaded-javascript/ch2-shared-workers/blue.js b/learning/multithreaded-javascript/ch2-shared-workers/blue.js
new file mode 100644
index 0000000..36b012f
--- /dev/null
+++ b/learning/multithreaded-javascript/ch2-shared-workers/blue.js
@@ -0,0 +1,7 @@
+console.log("blue.js");
+
+const worker = new SharedWorker("shared-worker.js");
+
+worker.port.onmessage = (event) => {
+  console.log("EVENT", event.data);
+};
diff --git a/learning/multithreaded-javascript/ch2-shared-workers/red.html b/learning/multithreaded-javascript/ch2-shared-workers/red.html
new file mode 100644
index 0000000..cd11934
--- /dev/null
+++ b/learning/multithreaded-javascript/ch2-shared-workers/red.html
@@ -0,0 +1,6 @@
+<html>
+  <head>
+    <title>Shared Workers Red</title>
+    <script src="red.js"></script>
+  </head>
+</html>
diff --git a/learning/multithreaded-javascript/ch2-shared-workers/red.js b/learning/multithreaded-javascript/ch2-shared-workers/red.js
new file mode 100644
index 0000000..4bb5f92
--- /dev/null
+++ b/learning/multithreaded-javascript/ch2-shared-workers/red.js
@@ -0,0 +1,7 @@
+console.log("red.js");
+
+const worker = new SharedWorker("shared-worker.js");
+
+worker.port.onmessage = (event) => {
+  console.log("EVENT", event.data);
+};
diff --git a/learning/multithreaded-javascript/ch2-shared-workers/shared-worker.js b/learning/multithreaded-javascript/ch2-shared-workers/shared-worker.js
new file mode 100644
index 0000000..4f06495
--- /dev/null
+++ b/learning/multithreaded-javascript/ch2-shared-workers/shared-worker.js
@@ -0,0 +1,18 @@
+const ID = Math.floor(Math.random() * 999999);
+console.log("shared-worker.js", ID);
+
+const ports = new Set();
+
+self.onconnect = (event) => {
+  const port = event.ports[0];
+  ports.add(port);
+  console.log("CONN", ID, ports.size);
+
+  port.onmessage = (event) => {
+    console.log("MESSAGE", ID, event.data);
+
+    for (let p of ports) {
+      p.postMessage([ID, event.data]);
+    }
+  };
+};
diff --git a/learning/multithreaded-javascript/ch2-web-workers/index.html b/learning/multithreaded-javascript/ch2-web-workers/index.html
new file mode 100644
index 0000000..291d464
--- /dev/null
+++ b/learning/multithreaded-javascript/ch2-web-workers/index.html
@@ -0,0 +1,6 @@
+<html>
+  <head>
+    <title>Web Workers Hello World</title>
+    <script src="main.js"></script>
+  </head>
+</html>
diff --git a/learning/multithreaded-javascript/ch2-web-workers/main.js b/learning/multithreaded-javascript/ch2-web-workers/main.js
new file mode 100644
index 0000000..52b30f5
--- /dev/null
+++ b/learning/multithreaded-javascript/ch2-web-workers/main.js
@@ -0,0 +1,10 @@
+console.log("hello from main.js");
+
+const worker = new Worker("worker.js");
+worker.onmessage = (msg) => {
+  console.log("message received from worker:", msg.data);
+};
+
+worker.postMessage("message sent to worker");
+
+console.log("hello from end of main.js");
diff --git a/learning/multithreaded-javascript/ch2-web-workers/worker.js b/learning/multithreaded-javascript/ch2-web-workers/worker.js
new file mode 100644
index 0000000..8d50f69
--- /dev/null
+++ b/learning/multithreaded-javascript/ch2-web-workers/worker.js
@@ -0,0 +1,6 @@
+console.log("hello from worker.js");
+
+self.onmessage = (msg) => {
+  console.log("message from main:", msg.data);
+  postMessage("message sent from worker");
+};
diff --git a/package.json b/package.json
index 877f2b7..a9bf493 100644
--- a/package.json
+++ b/package.json
@@ -11,6 +11,7 @@
   },
   "dependencies": {
     "@astrojs/check": "^0.3.4",
+    "@astrojs/mdx": "^2.1.0",
     "@astrojs/react": "^3.0.9",
     "@astrojs/tailwind": "^5.1.0",
     "@astrojs/vercel": "^7.0.1",
diff --git a/src/components/Header.astro b/src/components/Header.astro
new file mode 100644
index 0000000..117a6d0
--- /dev/null
+++ b/src/components/Header.astro
@@ -0,0 +1,39 @@
+---
+import { Image } from 'astro:assets';
+import myPicture from '../../public/images/me.png'
+import Link from './Link.astro';
+---
+
+<nav class="prose">
+  <Image width="63" height="63" src={myPicture} alt="Picture of Dillon Curry" class="my-1" />
+  <ul class="mt-0 flex items-center" >
+    <li>
+      <Link href="/">Home</Link>
+    </li>
+    <li>
+      <Link href="/blog">Blog</Link>
+    </li>
+    <li>
+      <Link href="/resume">Resume</Link>
+    </li><li>
+      <Link href="/contact">Contact</Link>
+    </li>
+  </ul>
+</nav>
+
+<style>
+    nav {
+    text-align: right;
+    margin: 0 auto;
+    padding: 0 24px;
+    max-width: 65ch;
+    display: flex;
+    justify-content: space-between;
+    height: 72px;
+  }
+
+  nav li {
+    display: inline-block;
+    padding-left: 4px;
+  }
+</style>
\ No newline at end of file
diff --git a/src/components/Page.astro b/src/components/Page.astro
index 7d01a73..bd27caa 100644
--- a/src/components/Page.astro
+++ b/src/components/Page.astro
@@ -3,7 +3,7 @@ import Link from "./Link.astro";
 ---
 
 <div class="Page">
-  <main class="prose">
+  <main class="prose prose-h1:font-semibold">
     <slot />
   </main>
 </div>
diff --git a/src/layouts/BlogLayout.astro b/src/layouts/BlogLayout.astro
new file mode 100644
index 0000000..ed19227
--- /dev/null
+++ b/src/layouts/BlogLayout.astro
@@ -0,0 +1,27 @@
+---
+import Layout from "./Layout.astro";
+
+const { frontmatter: {title, date} } = Astro.props;
+
+// Assuming you have a Date object
+const currentDate = new Date(date);
+
+// Format the date using toLocaleDateString
+const formattedDate = currentDate.toLocaleDateString("en-US", {
+  year: "numeric",
+  month: "long",
+  day: "numeric",
+  timeZone: "UTC"
+});
+---
+
+<Layout title={title}>
+  <header class="mt-4">
+    <h1 class="mb-2">{title}</h1>
+    <p class="text-gray-500">📝 Published on <time datetime={date}>{formattedDate}</time></p>
+  </header>
+
+  <article>
+    <slot />
+  </article>
+</Layout>
diff --git a/src/layouts/Layout.astro b/src/layouts/Layout.astro
index 2989f88..8573b79 100644
--- a/src/layouts/Layout.astro
+++ b/src/layouts/Layout.astro
@@ -1,9 +1,6 @@
 ---
-import Link from "../components/Link.astro";
 import Page from "../components/Page.astro";
-import { Image } from 'astro:assets';
-import myPicture from '../../public/images/me.png'
-
+import Header from "../components/Header.astro";
 interface Props {
   title: string;
 }
@@ -19,25 +16,10 @@ const { title } = Astro.props;
     <meta name="viewport" content="width=device-width" />
     <link rel="icon" type="image/x-icon" href="/favicon.ico " />
     <meta name="generator" content={Astro.generator} />
-    <title>Dillon Curry - {title}</title>
+    <title>{title} - dilloncurry.com</title>
   </head>
   <body>
-    <nav class=" prose">
-      <Image width="63" height="63" src={myPicture} alt="Picture of Dillon Curry" class="my-1" />
-      <ul class="mt-0 flex items-center" >
-        <li>
-          <Link href="/">Home</Link>
-        </li>
-        <li>
-          <Link href="/blog">Blog</Link>
-        </li>
-        <li>
-          <Link href="/resume">Resume</Link>
-        </li><li>
-          <Link href="/contact">Contact</Link>
-        </li>
-      </ul>
-    </nav>
+    <Header />
     <Page>
       <slot />
     </Page>
@@ -79,18 +61,4 @@ const { title } = Astro.props;
       Courier New,
       monospace;
   }
-  nav {
-    text-align: right;
-    margin: 0 auto;
-    padding: 0 24px;
-    max-width: 65ch;
-    display: flex;
-    justify-content: space-between;
-    height: 72px;
-  }
-
-  nav li {
-    display: inline-block;
-    padding-left: 4px;
-  }
 </style>
diff --git a/src/pages/blog.astro b/src/pages/blog.astro
index 48b6b4d..2518432 100644
--- a/src/pages/blog.astro
+++ b/src/pages/blog.astro
@@ -1,9 +1,12 @@
 ---
 import Layout from "../layouts/Layout.astro";
+import Link from "../components/Link.astro"
 ---
 
 <Layout title="Blog">
     <main>
-      <p>Maybe I'll write something here soon</p>
+      <ul>
+        <li><Link href="/blog/what-im-learning">What I'm Currently Learning</Link></li>
+      </ul>
     </main>
 </Layout>
\ No newline at end of file
diff --git a/src/pages/blog/what-im-learning.mdx b/src/pages/blog/what-im-learning.mdx
new file mode 100644
index 0000000..01834f0
--- /dev/null
+++ b/src/pages/blog/what-im-learning.mdx
@@ -0,0 +1,14 @@
+---
+layout: ../../layouts/BlogLayout.astro
+date: 2024-01-28
+title: What I'm Currently Learning
+description: A look at where I'm spending my time to learn new things to help in my career
+---
+
+This is a look at where I'm spending my time to learn new things to help me
+advance my career to a place that is fulfilling.
+
+- Working on this site, dilloncurry.com
+- [Google Tech Dev Guide](https://techdevguide.withgoogle.com/), to improve my knowledge around data structure and algorithms
+- [web.dev/learn](https://web.dev/learn), to strengthen my knowledge in the web domain
+- 📕 ["Multihreaded JavaScript: Concurrency Beyond the Event Loop"](https://www.oreilly.com/library/view/multithreaded-javascript/9781098104429/), to better my understanding of JavaScript