Title: Learn about the things you do. Sentence 1: Ben had never been skiing, so he planned a trip to go. Sentence 2: He rented short training skis to learn on and picked it up quickly. Sentence 3: He started going down larger runs, and liked going fast. Sentence 4: Short skis can't handle high speeds, and he injured himself falling.
Now, he knows to do research on top of making an itinerary.