diff --git a/src/lib/stores/types.ts b/src/lib/stores/types.ts
index 7572d1bf..01fad164 100644
--- a/src/lib/stores/types.ts
+++ b/src/lib/stores/types.ts
@@ -25,7 +25,7 @@ export interface State {
 
 export interface User {
   uid: string;
-  createdOn: { seconds: number; nanoseconds: number };
+  createdOn: { seconds: number; nanoseconds: number; };
   enrolled: boolean;
   onboarded: boolean;
   demographicsData: object;
@@ -36,9 +36,28 @@ export interface UserStudies {
 }
 
 export interface UserStudy {
-  joinedOn: { seconds: number; nanoseconds: number };
+  joinedOn: { seconds: number; nanoseconds: number; };
   enrolled: false;
 }
 
-// FIXME: this should be well-defined and probably should live elsewhere.
-export interface StudyMetadata { }
+export interface StudyMetadata {
+  name: string;
+  description: string;
+  studyId?: string;
+  tags: string[];
+  icons: Record<string, string>;
+  addonId?: string;
+  authors: {
+    name: string;
+    url?: string;
+  };
+  endDate: string;
+  version: string;
+  studyEnded: boolean;
+  studyPaused: boolean;
+  downloadLink: string;
+  schemaNamespace?: string;
+  studyDetailsLink: string;
+  minimumCoreVersion?: string;
+  dataCollectionDetails: string[];
+}
\ No newline at end of file
diff --git a/src/routes/studies/index.svelte b/src/routes/studies/index.svelte
index a70f30a4..eab403b1 100644
--- a/src/routes/studies/index.svelte
+++ b/src/routes/studies/index.svelte
@@ -14,18 +14,26 @@
   const notifications: NotificationStore = getContext("rally:notifications");
 
   function joinStudy(studyId) {
+    const study = $store.studies.find((s) => s.studyId === studyId);
+
+    if (!study) {
+      throw new Error(`Study with id: ${studyId} not found.`);      
+    }
+
+    window.open(study.downloadLink, "_blank");
+
     store.updateStudyEnrollment(studyId, true);
     notifications.send({ code: "SUCCESSFULLY_JOINED_STUDY" });
   }
+
   function leaveStudy(studyId) {
     store.updateStudyEnrollment(studyId, false);
     notifications.send({ code: "SUCCESSFULLY_LEFT_STUDY" });
   }
-  
+
   $: if ($store._initialized) {
     if (!$store?.user?.uid) {
       goto("/signup");
-   
     } else if (!$store?.user?.enrolled) {
       goto("/welcome/terms");
     }