Using the DeWalt DCPS620M1 pole saw is easy. First, make sure the battery is fully charged. Attach the extension pole if you need more reach. Hold the saw with the comfort grip handle for better control. When pruning, aim at the branch you want to cut and start the saw. The auto - oiling feature will keep the bar and chain lubricated during use. As for safety, always wear protective gear like gloves and goggles. Avoid using the saw in wet or rainy conditions. For maintenance, after each use, clean the bar and chain to remove any debris. Check the oil level and refill if needed. Also, periodically inspect the metal bucking strips and the tree hook for any signs of damage. If you notice any issues, refer to the manual or contact DeWalt support.