I have a link to sav caresheet in the Lizard Care section if you'd like to read up on them. Sounds like he/she is doing great! I wonder how it'll do with no tail.... Maybe with no tail it'll require a smaller cage and be easier to keep when as adult. It won't be able to whip you with it's tail at all, hehe.

Have you tried feeding pinkies or fuzzies yet? Very good for them. Good thing you got it, sounds like it'll live. Since it's a sav I'm gonna go out on a limb and guess it's WC or farmed. I'd bring it to the vet for some meds and a checkup. Get any and all parasites out.