I am not familiar with all ins and outs of German system...but you could start here@

http://www.handbuch-deutschland.de/book ... 2_003.html

 

> l want to know if l can be able to work fully in germany by virture of the fact that am married to a EU citizen.

If your partner is residing in Germany, then yes. Since the immigration is organised locally in Germany, you have to contact the "Auslaenderbehoerde" of the "Gemeinde" where you are registered. Usually they are rather efficient and helpful, so I would recommend to just make an appointment with them.

BTW: how did you register in two European states? I was told in Germany that you can only be registered in one state.

 

This depends on what being registered means.

In Germany any person can have only one "Main residence", but that is very German specific, and nothing to do with immigration.

If it means having the right to live in the country as the non-EU family member of an EU citizen, then I don't see any particular reason that you could not be "registered" in several places if you move around a lot.

Residence Cards typically are no longer valid if you leave the member state for more than 6 months at a time (or 12 months in case of pregnancy, childbirth...). But if you are coming and going, you will always be resetting the clock. So having a Residence Card in Germany and the UK and Ireland at the same time should not be a problem.

http://eumovement.wordpress.com/directive-200438ec/