Hi Shanna,
smart to research first. The link below will bring you to the most recommended websites, info on vet listing (make sure you have one lined up) and setup tips. When you go to the links be sure to look over the many articles. Chameleonnews.com is very current with many articles, some that were written by forum members, and has a wealth of onfo as well as other links. Lurking here and asking questions will be quite helpful to see what sort of things arise.
Beardies are SO different as I am sure you know. I had chams before bd. I only got Darwin last April, he just turned a year a few weeks ago. I can't believe how easy he is - a real laid back fella!
As for your cage question let me first say that if you get a "baby" be sure it is at least 3 months old. The disadvantage of him being in such a big cage right away is locating his food, unless you cup feed, which many of us do. Depending on where you live a big open cage can amke it difficult to keep humidity up.
Victor's advice of reading then asking questions is the way to go!
lele
-----
Chameleon Help & Resource Info
0.1 Veiled Chameleon - Luna. She's now hanging from her big jungle gym in the sky
1.0 Beardie - Darwin
0.2 felines - Kyndra and Lita
0.1 African Clawed Frog - Skipper
0.1 Mad. Hissers and she is on the loose!
0.1 Chilean Rose Hair Tarantula - Rosa Leigh
0.1 Goliath Bird-Eater Tarantula - Natasha
?.? Pinktoe Tarantula - no name yet