Here are some great Chappelle clips, followed by an invention work prompt to help you develop your comedy notebook.
Chappelle often does a kind of compare/contrast humor. He takes a situation and shows how it would go for a black guy and a white guy. Try out some compare/contrast humor of your own by coming up with a situation, then plugging in two people who are opposite in some way (white/black, young/old, rich/poor, gay/straight, male/female, etc). Then think about the larger point you might make with such a bit.
And here’s some Mitch Hedburg, who’s a short bit/one-liner kind of comic. Also, he’s dead. Don’t do drugs, kids.