Using the Klein 93LCLS laser level is easy. First, find a stable surface or use the magnetic mount to attach it. If you need to use it on the ceiling, the ceiling clip mount comes in handy. Once it's in place, turn it on, and the self-leveling system will quickly set up the laser lines and the plumb spot. For accurate results, make sure the surface is flat. When you're done using it, turn it off and store it in a dry place. To keep it in good condition, clean the lens gently with a soft cloth. Avoid dropping it or exposing it to extreme temperatures. If you have any problems, refer to the user manual or contact customer support.