The exposition of sleep hollow mostly revolves around the factor of a legend of a "headless horseman." The "headless horseman" legend was a story that basically was about a man that rides on a horse without a head. The rumor is that people still see him around but he is supposedly deceased.
I would say the main conflict in the story is our character Brom Bones. If you didn't know Brom Bones is the town prankster, so when things go left, everyone thinks it's Brom Bones. Brom is also a problem to our character Ichabod because Ichabod likes a girl named Katrina and so does Brom Bones.
I would say that the rising action of the Sleep Hollow is when both Ichabod and Brom are invited to Van Tassel's party. Also when Brom pulls Katrina and Ichabod away to tell them a story about the headless horseman.