The Mental Toolkit
Study smart → encode → sequence → compute → calendar.
A ground-up course in how to learn and how to calculate. First master the evidence-based study techniques that make everything else stick, then turn numbers into images, store them in order, calculate fast in your head, and name the weekday of any date — the complete mental-athlete kit, each sector building on the last.
1. LEARN
Learn How to Learn
The evidence-based science of studying — the forgetting curve, retrieval practice, spaced repetition...
2. MAJOR
Major System (Memory)
The phonetic number–sound system that turns digits into words so you can memorize numbers, dates, an...
3. LOCI
Memory Palace (Method of Loci)
The ancient spatial-memory technique — store ideas at places along a route you know, then walk it to...
4. PAO
PAO & Card Memorization
Person–Action–Object — the compression system memory athletes use to encode cards and numbers, fitti...
5. MENTALMATH
Mental Math
Calculate fast in your head — addition/subtraction shortcuts, multiplication and squaring tricks, di...
6. DOOMSDAY
Doomsday Algorithm
Work out the day of the week for any date in your head — John Conway's calendar-calculation trick.