I found this book a little aggravating. I'm not sure about everyone else, but my group is learning to sail on Sunfish, and those don't have a jib. It's a one person sailboat, and all of these examples and illustrations show a two person boat. It also might be more helpful if the illustrations corresponded more directly with the wording. I'm not sure how much this will help me on the water. Maybe it will be better after the instructor reviews it with us. ( )