I want to build [YOUR PROJECT DESCRIPTION].

Based on this idea, please help me create a technical plan. I'm looking for:

1. The simplest, most appropriate tech stack for this project
   - Recommend 2-3 options with pros/cons
   - Default to web technologies that are beginner-friendly
   - Suggest the easiest deployment path

2. A project structure outline
   - Key files and components needed
   - How data will flow through the application
   - Any APIs or external services required

3. A step-by-step building plan
   - Break this down into small, achievable milestones
   - Start with core functionality, then add features
   - Identify potential challenges and solutions

Please think through this carefully before responding, and help me understand the reasoning behind your recommendations.