Well, I tried again during the load screen (countdown) clicking ‘Ramp’ in stead of the ‘Runway’ and in that situation the training worked much-much better. Very lengthy training exercise, however very detailed. Only one button for the fire warning or something kept stuck, and could be released after the training instructions. The rest seemed to work except for the HAT test for some reason.
I guess it is also a good thing reading the manuals soon, however I first wanted to start the game without lengthy reading sessions.
At least I now know on what to concentrate on to cover anything I did not fully understand during the first training.