If your roommate is asleep keep the music down or if he is studying for a test it may not be the best time for a party. Yes, your roommate may be different from you but that does not make him a weirdo. All people are fundamentally the same. Everyone has hopes and dreams. He may not like the same music as you do or he may have a foreign or southern accent but such differences can enrich your relationship.
Nobody wants a nosey roommate.
Do be respectful of another's property. Don't set a cold drink on your roommates speakers or borrow items without permission. Use common sense. If you share items such as food, drinks or toothpaste make sure that you restock anything that you use. Discuss this with your roommate and if sharing causes a problem then don't do it.