I recently needed to collect some links about online organizing and outreach for a colleague. These are mostly pretty quick reads for the organizer-on-the-go.
In toolkit form (very handy): http://www.onenw.org/toolkit/online-organizing
In traditional form: http://www.bloggerrelations.com
In very short form: http://www.echoditto.com/best/organizing
In manifesto form: http://culturekitchen.com/the_cluetrain_manifesto_for_people_powered_politics
In guide form: http://www.epolitics.com/2006/07/03/online-politics-101-introduction-to-online-politics/
In wiki form: http://advocacy2.org