Using your DeWalt DCST970X1S string trimmer is easy. First, make sure the battery is fully charged. Insert the battery into the trimmer, and you're ready to go. Hold the trimmer with the auxiliary handle for better control. When trimming, move the trimmer in a smooth, sweeping motion. Be careful when working around obstacles like rocks or fences. Avoid hitting hard objects as it may damage the trimmer line. For maintenance, after each use, clean the trimmer to remove grass and debris. Check the trimmer line regularly and replace it if it's worn out. Store the battery in a cool, dry place when not in use. Also, keep the charger in good condition for proper charging. With these simple steps, your DeWalt string trimmer will serve you well for a long time.