Spaced Repetition: The Best Way to Retain What You Study
Spaced repetition reviews material at increasing intervals rather than massing it, producing 2–5x better long-term retention for the same total study time. Use Anki (free, automatic scheduling) or the Leitner System (physical flashcard boxes). 15 minutes of daily Anki review beats any amount of re-reading for vocabulary, code syntax, formulas, definitions, and any discrete fact needing fast recall.