At Young Camp have access only the players that still have the privileges of being (Young).
As long as your character has the state of "young" you can come here and use the various available services.
In essence Young Camp is a place for inexperienced players who can fight with different monsters, from weak to stronger, so as not to be directly immersed in the forests or caves of Sosaria without knowing what level are the enemies you encounter and therefore with the risk of dying easily.
Here you can also improve your animal trainer skill into the fence or simply increase the strength and dexterity with the mannequins!
Finally, for each zone there are guides to learn how to fight, how to heal, etc...