docs: Update README.md

Adjusted styling (note color, added 1st level indentation,  taxonomy i.e., Mender Server, Mender Enterprise) to make it easy to follow and read.

Co-authored-by: chiachenglu <82047138+chiachenglu@users.noreply.github.com>
Signed-off-by: Alf-Rune Siqveland <alf.rune@northern.tech>

README.md

@@ -4,71 +4,75 @@ Mender Server monorepo
 
 ## Getting started
 
-Before you start the Mender server, make sure you have [Docker Compose](https://docs.docker.com/compose/install/) installed.
-Mender server requires Docker Compose version `v2.23.1` or newer.
-
-```bash
-docker compose version
-```
-
-You will also need to update your local DNS or host rewrites, for example by appending to `/etc/hosts`:
-
-```bash
-echo '127.0.0.1   docker.mender.io s3.docker.mender.io' | sudo tee -a /etc/hosts
-```
+This tutorial teaches you how to setup up the Mender Server for evaluation purposes.
+The tutorial will take you through starting the Mender Server and adding a virtual device to learn how Mender works.
 
 > [!NOTE]
 > This docker composition is only meant for evaluation purposes.
 > Please use [the helm chart](https://github.com/mendersoftware/mender-helm) in production environments.
 
-Start by cloning and entering this repository:
+### Prerequisites
 
-```bash
-git clone https://github.com/mendersoftware/mender-server && cd mender-server
-```
+* Before you start the Mender Server, make sure you have [Docker Compose](https://docs.docker.com/compose/install/) installed.
+Mender Server requires Docker Compose version `v2.23.1` or newer.
 
-To start evaluating Mender, you can bring up your Mender server by running:
+  ```bash
+  docker compose version
+  ```
 
-```bash
-docker compose up -d
-```
+* You will also need to update your local DNS or host rewrites, for example by appending to `/etc/hosts`:
 
-Once all containers are running, you can create your initial user using the following command:
+  ```bash
+  echo '127.0.0.1   docker.mender.io s3.docker.mender.io' | sudo tee -a /etc/hosts
+  ```
 
-```bash
-MENDER_USERNAME=admin@docker.mender.io
-MENDER_PASSWORD=password123
-docker compose exec useradm useradm create-user --username "$MENDER_USERNAME" --password "$MENDER_PASSWORD"
-```
+### Starting the Mender Server
 
-Visit [https://localhost](https://localhost) and sign in using the credentials from the snippet above.
+1. Start by cloning and entering this repository:
 
-### Adding a virtual client
+   ```bash
+   git clone https://github.com/mendersoftware/mender-server && cd mender-server
+   ```
 
-To add a virtual client with the composition, run the following command:
+2. To start evaluating Mender, you can bring up your Mender Server by running:
 
-```bash
-docker compose run -d client
-```
+   ```bash
+   docker compose up -d
+   ```
 
-### Evaluating Mender enterprise
+3. Once all containers are running, you can create your initial user using the following command:
+
+   ```bash
+   MENDER_USERNAME=admin@docker.mender.io
+   MENDER_PASSWORD=password123
+   docker compose exec useradm useradm create-user --username "$MENDER_USERNAME" --password "$MENDER_PASSWORD"
+   ```
+
+4. Visit [https://docker.mender.io](https://docker.mender.io) and sign in using the credentials from the snippet above.
+
+5. To add a virtual client with the composition, run the following command:
+
+   ```bash
+   docker compose run -d client
+   ```
+
+## Evaluating Mender Enterprise
 
 > [!WARNING]
 > We strongly advise using [the helm chart](https://github.com/mendersoftware/mender-helm) for production setups.
 > This docker composition is only meant for evaluation purposes.
 
-For paying customers with access to private enterprise components, you can evaluate the Mender Server enterprise by replacing the above snippets from the following section.
-To start the server run:
+For paying customers with access to Mender Enterprise components, you can evaluate the Mender Server Enterprise by replacing the snippet in step 2 above to:
 
 ```bash
 export COMPOSE_FILE="docker-compose.yml:compose/docker-compose.enterprise.yml"
 docker compose up -d
 ```
 
-> [!IMPORTANT]
+> [!NOTE]
 > This composition will not work without a paid license with access to registry.mender.io.
 
-To initialize the admin user, use the following snippet:
+To initialize the admin user, use the following snippet in step 3:
 
 ```bash
 MENDER_NAME=Admin
@@ -79,7 +83,7 @@ docker compose exec tenantadm tenantadm create-org --username "$MENDER_USERNAME"
 
 Visit [https://localhost](https://localhost) and sign in using the credentials from the snippet above.
 
-### Testing Gitlab build artifacts
+## Testing Gitlab build artifacts
 
 To test/debug artifacts from GitLab CI, you can pull the image straight from the internal registry (after generating credentials).
 For testing, you need to setup the following environment variables: