Alrighty, since I totally love to gush about my little boy, I'll go over what I did with him when I got him home and you pick out the tidbits that you want to apply to your little darling.
To put it bluntly, Blake was an unholy terror when I brought him home. When I got him out of his box to put him in his tank, he managed to thrash around a bunch and get loose in my bedroom. After chasing him around my room for about 20 min. I finally got him into a sort of corner. I thought I had him, but then he shot up my pant leg. This made me pretty nervous because he was pretty snappish. He hadn't actually bit me, but there was a lot of huffing and puffing and tail whipping. But I finally got him settled into his cage.
I actually let him just chill in his cage for 7 days before I even tried to handle him. I would just lay down in front of his tank and watch him when he was out or do my studying in front of his tank so he just got used to my presence (I was in college at the time that I got him).
After the 7 days, I started handling him. I didn't handle him very much at first. For the first two weeks I would take him out of his tank for 15 min. I took him into the bathroom because it was a nice enclosed space that where he couldn't get out and couldn't get into any nooks and crannies. I would just let him explore the ground while I sat there watching him. He learned that I wasn't going to harm him, and because the linoleum floor was a little cool to the touch, he learned that I was also a source of heat. So he wasn't as frightened to come up to me and crawl on me.
Every two weeks I upped the amount of time that I took him out by 5 min. After a little more than a month, he had no problem with me getting him out of his tank and he learned that the bathroom was the place for him to do his business. Because my school schedule was pretty regular, I was able to get him on a very regular routine, which helped a lot.
I just really tried not to rush him and to not expect too much out of him. Initially when I would get him out of his cage, it would take me about 45 min. to get him out. I just went about it slow. If he was getting really aggitated, then I would give him space to calm down. I wouldn't pick him up until he was okay with me petting his head. Then I would pick him up with a minimal amount of fuss.
The strongest suggestion I have is that if you think your tegu could possibly crawl into an area that you don't want them to, DON'T ALLOW THEM NEAR IT! Blake managed to get himself into the dashboard of my old car and we had to tear EVERYTHING out! Another time, his leash got stuck on a bush and he managed to back out of it and dart off into the engine of car. I then had to go knocking on doors to find out who's car it was and tell them that my lizard was in their engine. Most recently his leash got stuck on a rose bush and he got out of it and took off under my parents' house while we were visiting them. I got him out fine, but I was covered head to toe in dirt and cobwebs.
And after all that he's still a little angel. He allows me to dress him up in costumes for Halloween. He was a part of my wedding procession. And he LOVES going for trips to the pet store, where he's usually on his best behavior and people LOVE him. I don't know what I would do without him!!
Well, I think that I've blathered on enough. Hope this helped!!
Lindsay