I suggest a 4'x4' tent. A ton of knowledge. And a horticulture specific lighting system sized to the tent with proper fans and filters and ventilation.
I grew 15 oz of great quality bud following the guides in ed Rosenthals grow guide and Jorje Cervantes grow bible.
I invested $1800 including seeds and soil and such to get started.
I bought quality branded gear and tent. And I exhausted out of a diy stealth window board and ran up my house air conditioning to keep it cool anyway that first summer.
Here is a free library of pot books.
http://catnews.org/FREE Pot Books/