Using the DeWalt DCS571P1 cordless circular saw is easy. First, make sure the battery is fully charged and inserted correctly. You can use the rip fence to make straight cuts and the bevel lever to adjust the cutting angle. When changing the blade, use the on - board blade key storage to get the key. Remember to always wear safety goggles and keep your hands away from the blade. After use, clean the saw with a dry cloth to remove dust. Store the saw in a dry place and keep the battery charged when not in use. If the saw gets wet, dry it thoroughly before using it again. Check the blade regularly for wear and replace it when necessary.