The book "The Better World Handbook - From Good Intentions To Everyday Actions" can be added to the books category. It tells how a person can be active on a personal level.
"The principle behind this informative and user-friendly guide is to incorporate everyday activism into even the most mundane areas of our busy lives-like grocery shopping, banking, eating, reading the newspaper, and working."
http://powells.com/cgi-bin/biblio?inkey=62-0865714428-0For organizing resources you can do a google or bookstore search on "activism organizing".