Update HOW-TO-GUIDE.md: Use vim instead of nano, clarify workstation terminology

- Changed all references from 'nano' to 'vim' editor
- Added new 'Terminology' section explaining:
  - What 'workstation' means (your main development machine)
  - Difference between workstation and VPS
  - What a repository is
- Enhanced Workflow 1 with detailed explanation of workstation usage
- Added examples of workstation machines (laptop, desktop, etc.)
- Clarified when to use workstation vs VPS workflows

This makes the guide more accessible for users unfamiliar with homelab terminology.

HOW-TO-GUIDE.md

@@ -4,6 +4,7 @@ Quick reference guide for using Gitea at http://100.120.125.113:3000 to manage y
 
 ## Table of Contents
 - [Getting Started](#getting-started)
+- [Terminology](#terminology)
 - [Cloning Repositories](#cloning-repositories)
 - [Making Changes](#making-changes)
 - [Pushing Changes](#pushing-changes)
@@ -25,6 +26,30 @@ Quick reference guide for using Gitea at http://100.120.125.113:3000 to manage y
 
 ---
 
+## Terminology
+
+### Workstation
+Your **main development machine** where you do most of your work. This could be:
+- Your laptop (MacBook, Windows laptop, Linux laptop)
+- Your desktop computer
+- Any machine you consider your primary development environment
+
+**Not** a VPS - it's a machine you have physical access to or directly control.
+
+### VPS
+A **Virtual Private Server** - a remote machine hosted in the cloud or on another system. Examples:
+- Your system-apps VPS at your hosting provider
+- Remote servers you manage
+- Machines you SSH into rather than use directly
+
+### Repository
+A project folder tracked by git with version history. Each repository can be:
+- `homelab-agents` - The shared agents repository
+- `vps-system-apps` - Your VPS configuration repository
+- Any other project you create
+
+---
+
 ## Cloning Repositories
 
 Cloning creates a local copy of a repository on your workstation or VPS.
@@ -56,7 +81,7 @@ This creates a `~/projects/system-apps` directory with Docker, scripts, and docu
 
 **Use Cases:**
 - Setting up a new VPS with existing configuration
-- Cloning on your main workstation for editing
+- Cloning on your workstation for editing
 - Working on system configuration with version history
 
 ### Clone Any Other Project Repository
@@ -185,30 +210,42 @@ To http://100.120.125.113:3000/pdm/vps-system-apps.git
 
 ## Common Workflows
 
-### Workflow 1: Edit on Workstation, Push to Gitea
+### Workflow 1: Edit on Your Workstation, Push to Gitea
+
+**Workstation** = Your main development machine (laptop, desktop, etc.)
 
 ```bash
-# On your main workstation
+# Step 1: On your workstation, clone the repository
+# (e.g., your laptop or desktop computer)
 git clone http://100.120.125.113:3000/pdm/vps-system-apps.git ~/projects/system-apps
 
-# Edit files in ~/projects/system-apps/
-# Update docker-compose.yml, scripts, etc.
+# Step 2: Edit files on your workstation using vim, VS Code, or any editor
+cd ~/projects/system-apps
+vim docker-compose/docker-compose.yml
+vim scripts/deploy.sh
 
-# Check what changed
+# Step 3: Check what you changed
 git status
 
-# Stage and commit
+# Step 4: Stage and commit
 git add -A
 git commit -m "Update Docker services with new health checks"
 
-# Push to Gitea
+# Step 5: Push to Gitea
 git push origin main
+
+# Now your changes are backed up on Gitea and can be deployed to your VPS
 ```
 
+**When to use this workflow:**
+- Editing configuration files on your computer
+- Writing scripts and documentation
+- Testing changes before deploying to VPS
+
 ### Workflow 2: Update Agents on VPS
 
 ```bash
-# On your VPS
+# On your VPS (remote server)
 cd ~/.homelab-agents
 
 # Get latest agents from Gitea
@@ -221,11 +258,11 @@ cat agents/sysadmin-session-closer.md
 ### Workflow 3: Work on VPS, Backup to Gitea
 
 ```bash
-# On your VPS
+# On your VPS (remote server)
 cd ~/projects/system-apps
 
-# Make changes to configurations
-nano scripts/backup.sh
+# Make changes directly on the VPS
+vim scripts/backup.sh
 vim docker-compose/docker-compose.yml
 
 # Back up your work to Gitea