A sponsor isn't required for going through the steps. Not until you get to the 5th step, and even that can be done with someone other than a sponsor. It is definitely helpful to have someone to guide you through, but all the directions are in the Big Book, there's lots of help in the step book, and you can get lots of thoughts, opinions, and advice here.
My suggestion would be to start going to lots of step meetings, share your experience there, and just get on with it. If you're stuck with something people here can help you out. When the time is right, if the time a right, a sponsor will present themselves. Move forward. Don't let another person, or lack of one hold you back.
My $.02 anyhow.
