🧒 Explain like I'm 5
Imagine building a toy with different parts that can be swapped out. You want to make sure each part fits perfectly and is easy to use, so anyone can build the toy without mistakes.
Interactive quiz
Check your understanding with an instant-feedback quick check.
Detailed notes
Senior-level deep dive: internals, pitfalls, and a self-interview ladder.
Practice with AI feedback
Answer out loud, get scored on correctness, depth, and clarity.
