1. Wipe coffee off the exterior of the machine
2. Occasionally remove, empty, and clean the drip tray. (See video below) You can just pull it right out and wash it in the sink.
3. If the screen on the machine is displaying the word "FLUSH", perform the flushing procedure in described in the video below. The tablets are in the kitchen drawers. The parts are in the machine, in the rectangular basket behind the drip tray. The whole process should take less than 10 minutes. (Or less than 15 minutes if you do the flushing procedure twice)

https://www.youtube.com/watch?v=R7zpBe5__ms