Using these pedals is straightforward. Just make sure your shoes are within the recommended size range for the large or small pedal. Clip your feet onto the pedals and start pedaling. When riding downhill or enduro, you'll notice the great grip and stability they provide. As for maintenance, regularly use the grease port to add grease to keep the bearings in good condition. Check the adjustable pins periodically to make sure they're tightened properly. There's no maximum rider weight, so riders of all sizes can use these pedals. Remember, these pedals come with a 5 - year warranty, so if you encounter any problems, you're covered.