Harry Lorayne 
Simple Secrets for Keeping Your Brain Young 
How to remember more the older you get

Completely practical and easy to use, the book advises in 24 chapters on how to recall names and faces; remember appointments; find keys, glasses, valuables; give speeches without notes; learn foreign words and phrases; memorise lists of items, quotations, facts and figures; and regain (or maintain!) the confidence that comes with having a sharp, active mind.