Brain

You should exercise your brain everyday. Read a book. Learn a new language if you want. Solve puzzles, crosswords or sudoku. Play logical games.

RSVP (Rapid Serial Visual Presentation)
You will read much faster by using RSVP.

http://dictator.kieranholland.com

Mnemosyne
Never forget again that piece of info.

http://mnemosyne-proj.org/

Brain Mapping
You can make maps of your mind or an idea and have a better understanding of it.

http://freemind.sourceforge.net