That's a little open of a question.
The size of the area you have to grow in is important.
How much you want to grow is also a factor.
Your budget would help too.
How do you want to grow, Hydroponics, dirt or ?

A little more info from you would be helpful. You should start with a good book I recommend a copy Jorge Cervantes book "Indoor Marijuana Horticulture the indoor Bible" you will use it as a reference for many years to come the ISBN number is 1-878823-29-9