Train Your Brain: Teach Yourself

Fluent Forever (Revised Edition): How to Learn Any Language Fast and Never Forget It

Brain Boot Camp: The ultimate mental workout: Mensa-level logic, verbal and numerical tests

A Mind For Numbers: How to Excel at Math and Science (Even If You Flunked Algebra)

Advanced Brain Training: Lateral thinking tests and Mensa-level puzzles to hone your mental agility

Moonwalking with Einstein: The Art and Science of Remembering Everything

Keep Your Brain Sharp: Teach Yourself

The Science of Getting Rich (The Unabridged Classic by Wallace D. Wattles)

Build Your Brain Power: The Art of Smart Thinking

The Memory Book: The Classic Guide to Improving Your Memory at Work, at School, and at Play

Mind & Brain Hacking for Beginners

Memory Palace: Essential Study Techniques To Remembering Anything (Improve Concentration And Maximize The Memory Potential Of The Brain)

You Can Have an Amazing Memory: Learn Life-Changing Techniques and Tips from the Memory Maestro

Change Your Brain, Change Your Body: Use Your Brain to Get and Keep the Body You Have Always Wanted

Brain Training: A Complete Guide to Master Your Brain (The Fun Workout for the Memory and Mind to Stimulate Conversation)

Brain Training: The Ultimate Guide to Your Mind, Remember Anything (Boundless for Memory Improvement, Mental Clarity, Concentration)