Emily and I wrote the Step by Step Guide for Starting a Nonprofit for our good friends at CalNonprofits. Check it out here.
If you're an executive or board member of a nonprofit and not familiar with CalNonprofits, you should be. Here's a short excerpt from their website:
The California Association of Nonprofits (CalNonprofits) is a statewide membership organization that brings nonprofits together to advocate for the communities we serve. In 2013 we are entering a new period of renewed activity and impact, and we invite you to join us as we chart a new course.