[Documentation] Improve Tutorial Navigation

[henok3878]

The Problem

The current tutorial structure in /docs/tutorials/ creates navigation frictions especially for newcomers. Many tutorial titles aren't descriptive enough, forcing users to open multiple tutorials one-by-one to find content that matches their interests and skill level.

Main issues are:

• Tutorial titles like "tot", "lats" don't clearly indicate what users will learn
• No clear indication of difficulty level or prerequisites
• Users must click through individual tutorials to understand their content
• No guidance on which tutorial to start with based on user goals

Proposed Solution

I plan to improve the tutorial overview experience by either:

1. Option A: Significantly improve the existing overview.md file to organize the whole tutorials with clear descriptions.
2. Option B: Create a new tutorial-guide.md that complements the overview

Rough Sample