Newbie freelancers are often so thrilled to get a new project that they assume they'll be paid when it's all over. And 90% of the time, they do. It's the other 10% of the time you have to worry about! A good contract is a key to your success...
A great article by Michel Fortin on his 7 (really 8) steps to writing copy. Michel is a prolific copywriter, especially for the web. Many copywriters have Michel write their copy for their web-based products!