I 100% agree with Brian- great advice! Start out small. I have hiked for many years and have hiked 12 of the NH 4000 footers since the end of May alone, but I don't feel like I could do a long distance (thru hike if you will) at this point. I haven't tested out gear/myself enough with multi-day or week long hikes. I would start smaller and like Brian said, try out gear from others (or rent from shops like REI) until you know your stuff more. I would also take a wilderness first aid class as no supplies, gadgets, tools, or supplies will do you good if you don't know how to use it.

Keep us posted as to what you decide to do!

Allison
4000-footers.blogspot.com