They are cute little suckers; they are wild in the Appalachias where I grew up and we would occasionally turn up a clutch of eggs while gardening, which we would then transplant to a flower pot. Nothing cuter than seeing one of those tiny heads popping up out of the soil! We never kept them though...they'd get returned to the area in which they were laid. The tail will grow back, but it will never be as pretty as the original. They drop them very easily...even the stress of handling can cause them to reject it. When it comes off, it will flip around for a while, presumably to distract the potential predator.

I found this sheet:
http://www.repticzone.com/caresheets/241.html

It's not terribly comprehensive but seems like an okay overview.