🟦 Samples with quick explanation
🟨 Complex, but if know the subject it should cover almost the main topics
🟥 Complex, but if know the subject it only have quick examples (like Algoristms relatex to algoritms ver no curso o nome bonito)
⬜ Notes with explanations
⬛ Notes in progress, that can be re-write to turn in 🟦, 🟨 or 🟥 topics