I took the German CLEP back when I was stationed in Germany, and I would agree that the listening section is the most difficult part- try to find some streaming news broadcasts to get your ears accustomed to hearing the language.
I did fine on the CLEP, and you don't have to be bilingual (although it obviously helps).
If you want to learn German, deutschewelle.de is a fantastic resource (you can read the news in German and many other languages) and they have some language learning resources as well- look for "German Courses" on the left-hand pane on the homepage. You can choose the German language news in the upper right hand corner dropdown menu "Choose from 30 Languages".
As far as a book recommendation, check out Modern German Grammar on Amazon.
One last thing- the Frankfurter Allgemeine is considered notoriously difficult to read, even by Germans. Having a business/economics background makes it quite a bit easier.
I did fine on the CLEP, and you don't have to be bilingual (although it obviously helps).
If you want to learn German, deutschewelle.de is a fantastic resource (you can read the news in German and many other languages) and they have some language learning resources as well- look for "German Courses" on the left-hand pane on the homepage. You can choose the German language news in the upper right hand corner dropdown menu "Choose from 30 Languages".
As far as a book recommendation, check out Modern German Grammar on Amazon.
One last thing- the Frankfurter Allgemeine is considered notoriously difficult to read, even by Germans. Having a business/economics background makes it quite a bit easier.