How to kiss??

Heyyyyy, so I'm 13 and I'm going to my first disco/dance with a boys school in my area, and my older sister has been saying that everyone kisses people at these dances, and I really want to but I don't really know how.

Can u suggest some tips for how to kiss?? Like what to do with my tongue and lips and teeth????

I also have glasses, are they going to be in the way???????

Help I'm sooooo nervous