I'm assuming your textbook doesn't have a heck of a lot of problems. Mine had 150 or so per each section. Plenty to keep ya busy for awhile. But you could try to find a textbook at a library somewhere, it would give you more questions.
If you want some more challanging and involved problems, which I'm thinking you might, you could try the AP board and do questions that were on previous AP Physics exams. I think the answers are available too so if you do get stumped you'll can still learn something.