Using the Rock Exotica Totem Descender is quite straightforward. First, make sure the rope diameter is within the recommended range of 8mm to 10.5mm for double ropes and up to 13mm for a single rope. Then, attach it to your climbing gear properly. When rappelling, if you need more friction, it's easy to adjust on the go. To stop, locking it off is simple. As for maintenance, keep it clean and dry after each use. Check for any signs of wear and tear regularly, like cracks or rough edges. If you notice any damage, don't use it and get it replaced. Always follow safety guidelines when using this descender in any climbing activities.