Since I don't know you, I'll go with some basics
You say you're more of a listener... But that's ok all the same, some people like to talk, some people like to listen. Just make sure you listen attentively, the right body language could help you along already, giving a little feedback on what they just said too, even if it's only 3-4 words (obviously an "uhuh", or "yeah" won't cut it).
Your responses at that point don't have to be conversation holders, but at least give them the impression that you are really listening to them, and that you feel what they're trying to talk about.
Also, doesn't hurt if you're an opinionated asshole (ok, maybe just opinionated
) so that you can at least explain your own point of view on something after they are done talking.
As for humor: unfortunately you can't really say at this point what your kind of humor is, since you haven't had any chance to really find out so far... I wouldn't sweat that too much. You can't force humor, it comes naturally, or it doesn't come at all.