I was searching for a group of people that exchange skills in Bonn and I found this website http://www.tauschringbonn.de
I have to admit that it looks a bit complex to me, I expected more user friendly website 
I don't know many people in Bonn, to be honest I just know a few people so I thought that by joining such group I could meet more people and help others.
Do you know anybody who is a member? What do you think about it?