I can play keyboards. :) I'll teach you how to play Jingle Bells! Find a C key. It's the white one before the 2 black ones. Put your right hand over it so that your thumb is on the C key, index on D, middle on E, ring on F and pinky on G. We'll number them from thumb to pinky as 1 through 5.

Play this:

3 3 3
3 3 3
3 5 1 2 3

Jingle Bells, Jingle Bells, Jingle all the way! :)