If you get mad about him asking then why did you tell him? Lol. No dickiness intended. But if you don't want to spend tons of money use the closet and get cfl's( I would recommend this for first timers) but if you want to go big then buy a 1000w hps and use the basement. (a bit more advanced)Holy crap!
Read the stickies and FAQs. Buy a book. Do some drawings. READ SOME GROW JOURNALS FIRST. How can you seriously expect someone to just hand you a list of what you need.
You need:
lights-good ones and a lot of them
Shelves-the kind you put things on that sit on the floor
Air-make sure its circulated
Heat-the kind that warms but doenst get too hot
Growing Medium-soil or soilless
Plants-the kind that make marijuana
Time-lots of it, more than you know what to do with
water-not too wet or your plants will catch cold
nutes-for the plants
Space-enough room to put the shelf in, and not in your parents house
Wood-for things
A broom-to clean with
fans-for the air that you got earlier
twine-to tie stuff down or up
nails-this is great to hold wood together