As good as the industry's rapid technology evolution is for our experience on the bike, the constant changes make servicing and maintenance a hassle. Thankfully, though, Park Tool's Big Blue Book of Bike Repair, 4th Edition is a complete, up-to-date repair manual for everyone from novices to veterans. Written by Park Tool Director of Education, Calvin Jones, the Big Blue Book features step-by-step instructions on everything from trail-side repairs to major overhauls on road, mountain, and BMX bikes. The fourth edition adds12-speed drivetrains, electronic shifting, brake bleeding, and wheel building, along with many other detailed instructions to this respected reference book. The book also contains headset standards and SHIS standards, along with updated torque and tool tables. Keeping the big blue book of bicycle repair close at hand has us easily tackling the next big at-home project.