I've had one for about a year now. Bruce is maybe a foot long, but what you have to realise is that he's pretty much two thirds tail, heh. I have him in a six foot fish tank with sand mixed with topsoil for the substrate and lots of bits of wood for him to climb on. I've found they like to dig a lot. He has a large kitty litter box to swim in. Feed them the standard reptile fare of creepy crawlies - crickets, cockroaches, locusts etc and you can't really go wrong. I also give him a little cat food. Apparently some like a bit of grated carrot and spinach as well. He has a hotspot of about 35-40 degrees and U.V.
I haven't really handled him much, so he is quite skittish. If you do get one and want to try and tame it then make sure you hang on to it really well as they move like lightning and holy hell can they jump!