If you are not sure you want to get into touring and you are going to be touring in the summer, in a place where bugs aren't a huge problem, a lightweight tarp and some rope are really all you need.
I know several people who regularly camp only with a piece of house wrap, a sleeping bag, a closed cell pad and a can of Deepwoods Off.
I have recently joined the Hennessey Hammock cult, but they run about $200. Waking up with no back pain and breaking camp in 5 minutes makes it well worth it, however.