Using the Yoyo Factory The ONE is easy. Just hold the yoyo in your hand, wrap the string around your finger, and then throw it down with a little force. When you tug the string, the yoyo will return to your hand. For beginners, start with simple tricks and gradually learn more complex ones using the guide that comes with the yoyo. As for maintenance, since it's virtually maintenance - free, you don't need to use any special oil or lubrication. But it's a good idea to keep it clean and dry. If the string gets worn out, you can use the spare string provided. Remember, this item is part of an assortment, so the style you receive might be random. If you have a preference, make sure to add a note in your order. And it's recommended for kids aged 8 and up.