How to evaluate new aws service before use

This video tells us the basic principals that we should follow while evaluating any AWS service before use. Basic evaluation could save lots of time.

[ramanandkushwaha]

Sir I'm trying to learn architect solution course, I bought a course from udemy but I found it difficult to learn, so do I join offline classes ?fees is to much for offline classes I can't afford it...so please guide me what should I do....waiting for your reply