Putting the mount on the wall is quite simple.  Attaching the brackets to the flat panel TV is quite simple.  Placing the TV on the mount is quite simple.  After that, everything is quite difficult.  Once the TV is mounted, you have to tighten two screws that are at the bottom of the TV.  This is quite difficult because of the lack of room between the TV and the wall.  Also, adjusting the tilt of the TV is quite difficult because of the screws on each side of the brackets.