Alis-in-Wonderland

Well, as the title says, I finally got a drawing tablet. All the stuff I have posted up to this point has been either drawn by hand and then taken a picture of, or drawn on the computer with a mouse (which doesn't come very easy to me) Now, I might actually post decent art...if/once I figure out how to work the damn tablet. For some reason, the line I'm drawing goes crazy and ends up looking like a bunch of zig zags when all I'm trying to do is a straight line or a circle. Wish me luck. BTW, does anyone know some free drawing programs? I currently use Firealpaca, but I would like to try some other programs.