Other than good boots, nothing is more important to a backpacker than a properly fitted backpack. A quality pack can make all the difference when carrying typical, multi-day backpacking load. This video does a good job of explaining how to fit your backpack to you. The video is produced by the Sierra Trading Post, a Wyoming based gear source that specializes in selling overstock and closeout items at fair prices. I bought my backpack, day pack, snowshoes and a summer weight sleeping bag from them.