me and some of my friends have wanted to go camping for a long time just by ourselves (we are 15/16) we wanted an completely by ourselves carry everything on our backs experience would this be the place to go? And do we need permits or license

If you're in SC the Palmetto Trail is s great beginner trail. You may want to plan a day hike, then an overnighter. Also, try your best to follow the "Leave No Trace" policies to help preserve the land for the future. Check out https://palmettoconservation.org/passage/swamp-fox-passage/

Look up the Palmetto Trail, you can start at the coast and work your way inland for miles through the Francis Marion forest. The trail has primative campsites that need no permits and some of those have old style water pump wells.