Depends on what you want. I 100% agree with MattieMae for sites to learn how to quilt and to improve. Bonnie's patterns are wonderful, Jenny's tutorials on Missouri Star are excellent, and Leah is young and fresh with some wonderful ideas about free-motion quilting. For commercial sites, most of the fabric manufacturers have lots of free patterns and there are also plenty at AllPeopleQuilt and similar sites. Have fun -- you can't possibly cover all the websites, so go with what you like!