You can Introduce yourself here. C'mon no need to be shy just go for it and if you have Exams and is not allowed to use the computer? Gone for a while? Let us know here.
Got a broken leg that needs treatment? Have a sickness that will only be healed by high class technology? Then go to the Hospital and then let your sickness/injury healed.
Are you bored and don't have anything to do? Then you can go to the Mall. You can eat food here, shop for new clothes, play at the arcade, go to movies, etc.