Cuchuga, I was once where you are, but at that time, we didn't have this fancy Internet thing. I got the idea of camping from a friend I met in college who had hike half of the Appalachian trail, as well as backpacked in different areas of the country. As a poor college student, I slowly accumulated gear over the course of a school year. I started with a small tent, a 0-degree bag, a Peak 1 stove, a Coleman solo cook set, and a 3/4 length Ridge Rest sleeping pad. At the end of that school year, my first trip was a solo drive around Lake Michigan. I had planned the trip and stops ahead of time. It was a fun trip, and was a real confidence builder, too.
I must admit I was a little apprehensive about going alone for three nights with minimal gear and three cans of Chili Mac or whatever. But if you can plan decently, you could probably handle something similar. The more you do it, the more comfortable you'll be, and you can tailor your experiences from there.
Take your time, and don't be afraid to ask questions. We're all glad to help.
And in MI, check out Warren Dunes. That was a pretty cool park. In the UP, the Porcupine Mountains Wilderness will accomodate car camping and backpacking. They also have rustic cabins for rent that can only be accessed by hiking.