Using the Klein Tools 3212 spud wrench is a breeze. First, identify the correct bolt size and nominal opening on the wrench as it's clearly stamped. To use it, simply place the opening over the nut. The continuous taper of the handle helps you easily line up the bolt holes. Just apply pressure to turn the nut. When using it, make sure not to apply more force than the wrench can handle, as it's for high - leverage but has its limits. For maintenance, keep it clean after each use. You can wipe it with a dry cloth. If it gets wet, dry it thoroughly to prevent rust. Store it in a dry place to maintain its durability and performance.