How to introduce myself to my classmates? Tell something about me, my hobbies an intestest fact about myself?

Tell them your name, and your favorite hobby. Or something you just like do do for fun, you could find someone who likes the same things

First, begin with greeting the class, then proceed with giving your name and/or your age. Tell about your favorite anything (Tv series, movie, sport, or etc.). Keep it short and sweet. Maybe add in something funny or a joke. Try to say something positive in the end like "I hope we can all get to know each other better." Do not be negative about yourself, it will only make things awkward. Don't forget to smile and look up at everyone! Good luck!