I took some reading stuff with me, and relaxed with my sister. One thing you want to do is test the extent of you freedom. Another result is the tendence to grow up, mentally at least, faster than your peers. After about a year, you find many of the people at school acting a bit childish. Well, this also depends you your personal nature.
Teachers go from being the authoritarian to being a friend.
This help tremendously. Teachers usually make great friends. They are great people usually with good personalities. Get to know at least one teacher from each department very well. This way, you can go to them for help.