As far as your humor goes, this is something I think I have down. I use a sarcastic, dry, observational sense of humor. I tell a lot, I mean, a lot of stories too. I've gotten really good at storytelling, and if you've got a good story, they'll be interested as long as you take your time telling it, act things out (facial expressions, body gestures, tone of your voice, etc.), and keep everyone's attention. Comedians to check out would be Dane Cook, Mitch Hedberg, and Stephen Colbert.