Learning to quote on jobs? I'm getting to the point where I'm getting some side gigs come up. 

My main question is... How do I quote on these? How do I know how much to charge? How do I know what funding to go for (project, milestone, hourly)? What's my 'hourly rate'? 

How do I know if a contract is good? How do I stipulate that out of scope work will cost more? 

Pretty much, I have no idea about how to price myself, how to get the best deal, or anything. 