Using the Garmin Rally RS100 pedals is straightforward. First, make sure your Garmin device is paired with the pedals. Once paired, the pedals will start measuring power and cadence right away, and the data will show up on your device. When installing the pedals, ensure they are properly tightened using the right tools. They are compatible with Shimano SPD - SL cleats, so just attach your cleats as you normally would. As for transferring the pedals between bikes, it's as simple as removing them from one bike and installing them on another. For maintenance, keep the pedals clean. Wipe them down after each ride to remove dirt and grime. Check the cleats regularly for wear and tear and replace them if necessary. Avoid exposing the pedals to extreme temperatures and moisture. If you have any issues, refer to the Garmin support website or contact their customer service.