Start with the basics: backpack, sleeping bag, tent. Get some simple cooking equipment, including a packable stove and pot. Get some decent footwear. That's really about it. Look online for some good lists of equipment you might want to carry with you. IMHO, it's always better to err on the side of less stuff as opposed to more stuff. There are few things you can't do without, especially on an overnighter. The key thing is to go out and get a few nights under your belt. Do some research online for local trails and pick one that seems ridiculously short. Go on an overnighter and see what you think. Learn how to use all your stuff and then you can go from there. should I bring a friend?