I was given a used machine and would like to learn how to clean and use the espresso portion of it. There was no manual and I am not sure where to put the water. There are two chambers for water in the back. One for the coffee side and the other for the espresso. The espresso also has a chamber with a cover that you can open. Any help would be appreciated.

use viginar and water and let it run its course. then just run regular water a couple times to get the viginar out.