The finnish language Alfa discussion forum.
The english language Alfa discussion forum which has own discussion group for GTA and GT owners.
An extensive german language Alfa discussion group. Vivid discussion but the forum doesn't have any discussion group specifically for GTA owners.
he Alfa dealer in Braunschweig Germany which sold me my car. Excellent service.
Very extensive german webpage for searching used cars for sale in Germany.
Another german used car webpage. Also this has several hundred thousand cars for sale.