Using the Yakima King Joe Pro 2 Bike Rack is super easy. First, use the QuickTrigger II™ hub system to install the rack on the rear door of your hatchback, minivan, or SUV. It's designed to make the installation quick and painless. Once it's on, place your bikes in the StableCradles II™ to keep them firmly in place. When you're not using the rack, fold down the arms for a more compact storage. Make sure to check that the oversized padded feet and coated metal buckles are properly positioned to protect your vehicle. As for maintenance, keep the rack clean and dry. Check the metal parts regularly for any signs of wear and tear. And don't forget, the integrated bottle openers are there for a bit of fun, but use them gently. Also, always ensure that the total weight of your bikes doesn't exceed the 40 - kg limit and 20 kg per bike limit.