Translation of verwässern

In the meantime I am listening to some Spanish CDs. They are intended for the car, but no one can tell you when to listen to it, how many times and how often. Please understand that I work a lot.
In addition, I want to inform you that I found a possibility to deliver a more Spanish lessons from Vocabulix. To my knowledge, the lessons are excellent and a great base for the Spanish training.
we have added the logo. However we changed it, because the original did not look good. The text could not be read, and it would not fit into the book page. I hope you are satisfied nonetheless.