As the above poster has mentioned, all of this info can be found on this forum-so you have found the greatest source of info concerning chameleons. I am so glad that you are starting your research
before getting one! Welcome to the world's greatest addiction! One thing-a 2 month old will really need the same exact amount of care and time as a 1 year old. They are a time consuming animal. They do not drink out of water dishes, must be misted several times daily, and only eat live insects-which can be as much work as the cham itself!
Here is a list of items you would need if you got a 3 ish month old Veiled-but Veileds grow fast and will need a larger cage soon. Panthers are about the same care but grow a bit more slowly, but eventually both of these if males will need a screen cage at least 24X24X48. They need smaler cages as babies to find food more easily.
Zoo Med 18" 5.0 UVB bulb
$13.99 each
16 x 16 x 30 inch Aluminum screen cage
$54.99 each
20" fluorescent hood fixture
$26.99 each
Zoo Med Digital Thermometer with probe
$6.99 each
Regular Clip lamp
$5.99 each
Exo Terra Jungle Vine Medium
$9.89 each
RepCal ultra fine calcium with D3
$4.99 each
Rep Cal Calcium WITHOUT D3
$4.99 each
RepCal Herptivite supplement
$8.99 each
Subtotal $137.81
Tax TBD
Shipping $16.95
Total $154.76
These prices may be off a bit, but LLLReptile.com has the lowest prices around! However-DO NOT BUY A CHAMELEON FROM A PETSTORE! Buy from a reputable breeder-the site sponsors and hobbiest breeders on this website are the best in the business. Add some live plants to fill up the cage and you are good to go!
Now all that said, please read everything on the below link-it is the most current care sheet out there! Good luck!
http://raisingkittytheveiledchameleon.blogspot.com/