Hi...
Welcome aboard...you look fine today...!!
Do you already have all necessary equipment? If not, will your budget allow you to buy all fill-in gear?
Do you have new or used/surplus gear?
You already (should) know what water, food, first aid, shelter, fire, signaling, sleeping gear, clothing, footwear, maps, backpack, etc., are necessary. Do you already have this gear?
If not, you may get further help via reading some camping/backpacking-type magazines...plus much backpacking/survival info you can pick up on the 'net. Also, the AT forums.