Using the Milwaukee 2448-21 M12 Cable Stapler is easy. First, make sure the battery is fully charged and inserted correctly. Then, load the 1' insulated staples into the 45-staple magazine. When you're ready to staple, position the cable guides over the cable you want to fasten and pull the two-finger trigger. The LED work light will help you see in dark areas. Remember, this stapler is only compatible with Milwaukee 1' insulated staples. As for maintenance, keep the stapler clean and dry. Check the battery regularly and charge it when the fuel gauge shows low. If the stapler jams, use the staple viewing window to locate the jam and carefully remove the stuck staple. Always store the stapler in the included contractor bag to protect it from damage.