Using your e*thirteen Vario Infinite Dropper Seatpost is easy. First, adjust the travel according to your needs. You can do this in 5mm increments up to 30mm without any tools, and there's no need to remove the post from the bike. To change the height of the seat, use the cable - actuated Vario 1x Dropper Lever. You can also adjust the fore/aft position of the saddle up to 12mm and the seat angle up to 28°. When it comes to maintenance, keep the seatpost clean. Wipe it down after each ride to remove dirt and debris. Check the cable regularly for any signs of wear and tear. If you notice any issues with the compression or movement, it's a good idea to take it to a professional bike mechanic. Also, make sure to store your bike in a dry place to prevent rust and corrosion.