Translation of wetzen

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.
Now I needed to decide where to go next and I decided to use the information that the girl gave me. I went back into town to the central station and booked a night bus to a place called Palenque.
Some of the people had invited me for dinner and I joined them. I soon found out that they were eating at their apartment and were cooking by themselves. I found myself peeling raw potatoes.