Using this EMAX Tinyhawk III AIO Flight Controller is easy. First, make sure your Tinyhawk III is powered off. Then, gently remove the old flight controller and replace it with this new one. When you turn on your Tinyhawk III, it should work smoothly. As for maintenance, keep it in a dry place. Avoid exposing it to water or high humidity. And when you're not using your drone, take out the battery to prevent any potential damage to the flight controller. Also, be careful when handling it to avoid any physical impact that could affect its performance.