Using the DeWalt DW08302CG Green 3-Point Spot Laser Level is a breeze. First, take it out of the case and insert the provided batteries. Then, you can choose to mount it on a surface using the magnetic bracket or hang it via the hang hole. If you need a more stable setup, attach it to a tripod using the 1/4' thread. When using it, make sure the area is relatively clean as it has an IP54 rating but too much dust can still affect its performance. As for maintenance, after each use, put it back in the case to protect it from damage. Also, check the batteries regularly and replace them when they run low. And remember, it has a 1-meter drop rating, but try to avoid dropping it as much as possible to keep it in good condition. With a 3-year limited warranty, 1-year free service contract, and 90-day money-back guarantee, you can use it with confidence.