You can see stars more clearly when get out of the city. And there's no traffic. First, determine how many people are going on your trip and how long you plan to stay. Then choose a destination. Once you decide where you're going, you can make a reservation.
State parks accept reservations as far as six months in advance.
Many sites are already full for the July 4 holiday. State parks require vehicles to have a Michigan State Park permit. Just stick with the basic items until you know that you like camping. The people come into the campgrounds in a very positive frame of mind and they're there to have a good time. It usually happens.