Get a tent, sleeping pad and sleeping bag of craigslist, a cheap cooler (coleman marine) and go camping. If you want to get into overlanding, you need to do it! Find some place you'd like to go camp and go camp. A cast iron skillet can be used over coals to cook and bring plenty of drinking water and trash bags.
Go have fun! You don't have to have a super built rig to travel and camp. We've done it with a Ford Escort.... Find some folks to go with near you. I'm sure the members map will show someone in your area. I camped for many years with a walmart tent, coleman sleeping bag and cooked hot dogs on sticks over the fire. But I was having fun. As I've gotten older and watched the guys I hang out with, I've developed a pretty nice setup with mostly second hand gear.