Using this backpack is super easy. Unzip the main compartment to put in your books, clothes or other big items. The internal pocket is great for storing small things like keys or cards. You can put your water bottle or small items in the side mesh pockets. The external small zipped pocket is perfect for quick - access items. When it comes to carrying, adjust the shoulder straps to a comfortable length. As for maintenance, you can spot - clean it with a mild detergent and a soft cloth when it gets dirty. Don't machine - wash it to avoid damaging the print and the structure. Keep it in a dry place when not in use. And always make sure not to overstuff it to prevent the zippers from getting stuck.