: Test to learn. Actively trying to recall information from memory (like using flashcards or free-recall summaries) is far more powerful than re-reading notes.
: Go straight to the source. If you want to learn to speak a language, speak it; don't just use apps. If you want to code, build a real project. Ultralearning By Scott H. Young Pdf
: Understand why you forget. Use spaced repetition—spreading your study sessions over time—rather than cramming, to make knowledge stick long-term. : Test to learn