For backpacking, try the Colin Fletcher Complete Walker Series. Also Karen Berger has written a book for novice backpackers. Just google the authors or go to Amazon or Barnes and Noble.
BTW if you want to read a funny book about some stumbling, bumbling newbie backpackers on the Appalachian Trail, try "A Walk In The Woods" by Bill Bryson. It will relate how NOT to do things while backpacking.
