Using the Garmin Rally RK100 is easy. First, install the pedals on your bike just like you would with normal pedals, making sure they are properly tightened. Pair them with your Garmin device so you can see the power and cadence measurements right away. After your ride, sync your data with the Garmin Connect app or other apps. When it comes to maintenance, keep the pedals clean. Wipe them down after each ride to remove dirt and grime. Store them in a dry place to prevent rust. Also, check the cleats regularly for wear and tear. If they're too worn, replace them to ensure a good connection between the pedals and your shoes.