Using this DeWalt trigger clamp is a breeze. To clamp an object, simply place the clamp on the item and use your one hand to operate it. If you need to use it as a spreader, press the quick - change button. When using, make sure the object is within the 300 lb clamping force limit to avoid any damage. As for maintenance, clean the clamp regularly to keep it in good condition. You can wipe it down with a dry cloth. Check the removable jaw pads periodically and replace them if they are worn out. Also, store the clamp in a dry place to prevent rusting of the steel bar.