Using these crossbody bags is super easy. Just adjust the strap to your preferred length and sling it over your shoulder. You can carry it on either side, depending on your comfort. When it comes to what you can put inside, you can store your phone, wallet, keys, a small makeup kit, or even a book. As for maintenance, use a soft, dry cloth to wipe off any dust or dirt regularly. Avoid getting the bag wet, as it might damage the faux denim leather. Also, keep it away from sharp objects to prevent scratches. Remember, due to the warning about chemicals, don't let children play with it and always wash your hands after handling the bag. If you have any questions or need more help, feel free to reach out.