Starting with zero knowledge, find a trusted site that will give you the basics in very plain, easy to follow language. I strongly recommend:
growweedeasy.com
They have a lot of good info and suggestions for setups for about any budget, situation and level of knowledge.
Use this site to build your diary and to view other diaries for tips, tricks and inspiration. Most of the ones that answer questions on here are just gonna talk right over your head and probably confuse you more than anything.
I would have probably recommend starting with a regular(photoperiod) plant over an auto for your first grow. They're more forgiving to mistakes since you can control their cycles.
Good luck!