Using the EBC S2 Kits with Greenstuff Pads and USR Rotors is straightforward. First, make sure that if you're upgrading the pads, you do it on both the front and rear of the vehicle. During installation, don't try to remove the Thermic Black coating on the rotors. Just install the pads and rotors as they are. After installation, drive normally and make about 10 to 20 stops. The brake pads will naturally remove the coating in the swept area. As for maintenance, keep an eye on the wear of the brake pads. Replace them when they get too thin. Also, check the rotors regularly for any signs of damage or excessive wear. Remember, any attempt to remove the Thermic Black coating with brake cleaner or other methods is not covered by the EBC warranty.