Whether you're an off-road expert, you've never put your vehicle in low-range before, or fall somewhere in between, FunTreks' guidebooks have something to offer you. The guides are set up for regional trails in the Southwestern U.S., and one of the company's newest is the "Guide to Northern Colorado Backroads and 4-Wheel-Drive Trails," seen here. The books contain maps, photos, and detailed directions, with easy, moderate, and difficult trails for trucks, SUVs, and ATVs. There are even eGuides at the website. Each book costs $24.95.