Deal With Your Stuff

http://www.43folders.com
Merlin Mann's collection of ideas supporting and exploring David Allen's GTD

http://davidco.com/
David Allen, author of Getting Things Done

http://goodexperience.com/bit-literacy/
Mark Hurst book Bit Literacy

http://clutterless.org/
clutter recovery groups

http://www.unclutterer.com

http://zenhabits.net/

http://psychologyofclutter.wordpress.com/