Read some posts. Make your own system and you will save a chunk of money. Then buy the best lights you can. And get some general hydroponics micro and bloom nutes. Get a ppm meter and a ph meter. Buy some vinegar for ph down adjusting. That's about the bare minimum you need. Then prepare to be busy for awhile. Oh, and Zandor always says grow some soil plants too. Hydro can be a bit tricky. Especially for someone who has never grown before. Good luck.