I have found a lot of resources so far, and I thought it might be helpful to collect them in one place for easy reference.

• Alameda County Library: Procedure for Starting a Business
• City of Alameda: Starting a Business
• Oakland Community and Economic Development Agency
• SCORE East Bay
• CA East Bay Small Business Development Center
• SF SBA office
• CA Business Portal: Starting a Business
• CA Lawyers for the Arts
• N. CA Graphic Artist's Guild resources
• Business Owners' Idea Cafe