I just rescued a baby ball yesterday, the old owner couldn't care for it anymore and needed to get rid of it. I've had 1 BP in the past, so I'm not exactly an expert here and need some realistic advice/suggestions as I'm not swimming in money here but I can definitely care for the little guy. The snake was given to me (just the snake) and here's what I conjured up pretty much on the fly:

10 gallon tank, zoo-med uth, newspaper substrate, home-made hide from empty and washed out margarine tub, and a rock (NOT a heat rock) I used for my old BP

I have a shirt covering 1/2 the screen top to up humidity a little, but I have no thermometers or anything to measure humidity. (I had all this stuff but lost it and my bp due to a house fire)
The hide is light in weight and the little guy keeps moving it around; I'm trying to keep in on the warm side of the tank.

Is there anything I really need to know/do here?

I'm going out on friday to buy some more stuff but I'm on a $50 budget.