It's been a long time since I've posted anything on here!Time flies when you are chasing an 8 month old around!

I've been asked to shoot some baby photos at a mothers group that I attend. This is something I want to do long term (kids/family portraits) so I want to start professionally. What I want is some advice on how to price and also on what I would need to have signed by each client if I am to use the photos for promotional purposes (eg; website). Is there a basic realease somewhere on a website that is used by photographers?
In terms of pricing, I am thinking of charging a sitting fee and allow prints to be purchased rather than "shooting and burning" a disk for clients to have the images. Is this the most common way to go now?
Any suggestions from all the gurus out there would be great!
Cheers
Alicia