Using this water bottle is super easy. Just open the cap, fill it with your favorite drink, and you're ready to go. When filling, make sure not to overfill it to prevent spills. During use, keep the bottle upright as much as possible to avoid leaks. After each use, empty the remaining liquid and give it a good rinse. Every few days, use a mild detergent to clean the inside thoroughly. Store the bottle in a cool, dry place when not in use. This will help keep it in good condition and free from any unpleasant smells or stains.