"20 minutes: you will forget 42% of what you learned.
60 minutes: 56%
9 hours: 64%
a week: 75%
HOW TO REMEMBER
- SPACED REPETITION
- QUICK REVIEW: Within a few hours of first learning something new, read your notes
- SKIP A DAY: Each subsequent review should take place at a longer interval than the previous one.
- REVIEW AGAIN: Review everything
- TAKE A TEST: Testing your memory improves retention by 20-50%
- REPEAT SEVERAL TIMES"