here's an article that I found invaluable during my thru last year. A few things are dated, but you'll figure it out as you move along. Remember, the more time you spend in the woods, the less money you'll blow in town. Unless you have no budget, then spend away!
Ideas for an Inexpensive Thru Hike http://www.whiteblaze.net/forum/content.php/177
Have a great walk newbies!