Using the Wahu Groova is easy. Just hold it firmly by the edge, aim in the direction you want it to go, and give it a gentle toss. Whether you're at the park, the beach, or in your backyard, it's perfect for a fun game with friends and family. As for the assortment, remember that the styles are picked randomly when we send it out. If you have a favorite style, tell us in the order notes, and we'll do our best to get it for you. When it comes to maintenance, the Groova is pretty low - effort. After use, just give it a quick wipe with a damp cloth to keep it clean. It can handle different weather, but try to avoid leaving it in extreme heat or cold for long periods to keep it in good shape.