I honestly find table saws a little frightening, so still don't own one. I do all my rip cuts with a band saw or a circular saw with a Kreg rip fence. I clean up these cuts with a hand plane. If you're doing relatively small projects, you could always rip with a hand saw, then clean up the cut with a plane. You'll get plenty of exercise! Just make sure you leave plenty of room for waste on either side of the cut, as it'll probably wander at some point. I can remember being 15, and wanting to do things that cost money, and being very frustrated when I didn't really have money to buy anything, or transportation to go to the store! Just do what you can now and be patient. But if you do make it to a lowes with your folks, think about getting another band saw blade. They can be pretty inexpensive. You just need to know what size blade to get. For ripping, use a blade with a low tooth count - 3-4tpi, and as wide as your saw will accept - 3/8" to 1/2". Even if your band saw doesn't have a fence, you can just clamp a straight board to the table and you've got a rip fence! That way you can also adjust for blade drift if you can't adjust the wheels of the bandsaw to fix it. Good luck!