Legal advice is important. However, this is very common and you should be able to get answers very quickly through the CA State website http://www.sos.ca.gov/business/be/
The real question is are you on a tight budget or do you have some money to spend. If you have some extra money let an attorney handle it all. If you are on a really tight budget you may be able to start as an LLC then change as needed and when you have more $. Good Luck!