You start with whoever will give you a job in this day and age. With any foreign airline there will probably be a requirement to speak the national language to an extent, although the international language of aviation is English (except, tragically in at least one case, France...)

is it worth becoming a special member or whatever it is

the french speaking among pilots and ATC actually caused a crashing killing a number of people. The pilots of a british plane didnt understand that an airfrance jet had been cleared for takeoff when crossing the runway. by the time they realised it was too late.

The best way into the Airlines is contacts. You get these by starting out at the bottom while getting your PPL, alot of the instructors are ex- heavy pilots so get to them ask them for advice and perhaps who they could contact. One of the hardest things to do in the aviation world, is get your foot in the door.