Chams are awesome to keep and not too hard as long as your set up right. I make no claim to be an expert, but this worked for my boy, and applies to a lot of the larger species like panthers or veiled.

The basics are:

a ventilated cage (all screen)
heat lamp (warm spot about 90 F, all the way down to 75 or so at the bottom of the cage)
UVB bulb, only use the reptisun 5.0. Anything else will damage a chams eyes or not get them the uvb they need.
lots of branches
live plants to keep humidity up

They need misting at least 3 times a day. Plus a dripper set up for when you're not misting. My cham has an automatic mister that mists him 4 times a day.

They need calcium. Plain calcium without D3 a couple times a week, more for babies and females. Calcium with D3 once every other week. Multivitamin once a month.

Lots of variation in the food. If you feed crickets, they need to be gutloaded first. I feed silkworms, hornworms, butterworms, waxworms, and superworms.

Chams make amazing pets, and there's a lot more than what I covered here. If kept right they are stunning, but if kept wrong they can get all sorts of fun, weird diseases and disorders. There are plenty of good caresheets online, and most good breeders will offer a starter kit that works ok. Just make sure you hit the basics outlined above and you'll do fine.

Anyone else feel free to chime in with anything I missed or got wrong!