If I could suggest, just start small.
Go to a state park, and hike the trails for the morning. Wear good shoes, pack some snacks and water, maybe a picnic. Take a basic first aid kit, and your cell phone, lol. Don't go too deep, and plan to be back for lunch. Throw some extra clothes in the car JIC, but you probably won't need them.
Then, plan a daytrip. Go to a state park again, and pick a longer and more difficult trail. Pack more food, same first aid kit, water, and your phone. Don't forget the camera. Figure to be out for about 6 hours, maybe 8 including eating.
Okay, now pack a WATERPROOF tent. It doesn't have to be huge or expensive. We've always used Eureka. We have a 4 man and a 2 man, but it's starting to get cozy now. (We have 3 children, 5, 2, and 1). Pack one change of clothes, and pajamas if you insist. More food than last time. Back to the state park. Put up your tent at the campground, and pick a trail. No big deal.
Slowly, get braver and braver. You'll have a feel for how much you can do, and how much you need to pack. You won't forget the same thing twice, lol! And, by going to a state park, you usually have the backup of the "campground host", and emergency numbers, and often a "store" of sorts for those extras.
It doesn't have to be a huge, scary undertaking. The first few times, just pack trail mix, and lots of snacky foods. As you get more comfortable, and start staying overnight, you can do cool things like mix up a quick cake and bake it in an orange peel wrapped in foil and put under the coals at the edge of the fire. Apples, peeled but not cut, and put on a stick and roasted over the fire are really good, too. Periodically pull them out and sprinkle with cinnamon and sugar. Eat off that yummy goodness, then repeat until your apple is gone.
People also usually get stuck on the hotdog routine, but you can easily do corn on the cob, or even BLT's. We actually just put our bacon on a stick like a hotdog and cook it over the fire. Dh and the kids look around on the ground for good sticks, and he sharpens the ends with his knife.
We've been known to subsist on banana bread, nuts, and fruit for several days.
Oh, and dh's words to me were "every ounce counts, babe." Pack light, and never take two items when you can make do with one. Figure out all the uses of an item and try not to take more than you HAVE to. It's no fun keeping track of your stuff the whole time you are there. We went camping for a week with a family who moved to the woods. They had a trailer and all SORTS of stuff. It was amazing all they had. We had 2 backpacks, our tent, and a bag of food and a cooler. We ate stuff raw, or cooked over a fire. It's no fun to hike with a pack that's too heavy, either.

Really, just start small and build up. It's NOT a big deal. Really.
