I'm hiking part of the appalacian trail in June. Me and a few of my friends do parts of the trail every year. If your staying overnight I would reccomend a Jet Boil. Its a small pot for boiling water. It will boil 2 cups of water in like 45 seconds. And a water purifier if your somewhere without drinkable water. Then you have dried food from Mountain House. Its actually pretty good. For Breakfast I always take just some instant oatmeal packets. If your going hiking for 3 or 4 days, always try to take as little or as lightweight stuff as possible. My pack for 4 days on the appalacian usually weighs about 20 to 25 lbs. And that incudes everything, a 1 man tent, clothes, rainsuit, food, water, a navy seal knife, water purifier, the jet boil, sleeping bad, a sleeping pad, rope, first aid kit, and more. Just remember to keep everything as light possible. For example my rainsuit weighs 11 ounces. My navy seal knife is 5 ounces. And for gods sake don't try to buy some cheap ass shoes. If your hiking in the mountains get some good hiking shoes or boots. If your feet get wet or blistered your screwed.