Thanks to all for the advice.
Based on the reactions I will change the Flight Simulator usage and use it to learn about the instruments, their usage and how they react in relation to activity of the plane.
I will refrain from flying or doing take-off and landing exercises and just see how instruments indicate their information as the plane moves. Furthermore, now that I have been told what a glass cockpit means, I think I will also try to map what instrument (old way) maps what information in the (new way) and if they differ in features.
I have also just set-up FlightAware to listen to radio communications in order to get used to the many accents, the fast speech, the noisy radio channels, etc.
I also have set-up Goolgle Earth to map real 3D Airport images (RunWays, TaxiWays, etc) with the ground maps that FlightAware embeds. I think I know the Jerez (Spain) Airport by memory now and JFK starts to become very familiar
- just joking.
Thanks also for pointing me to the "Pilots Handbook of Aeronautical Knowledge" of the FAA.
And although I found my English to be quite decent (3rd language) I found out that the aviation world has a lot of abbreviations and field specific terms. So I started to enhance my vocabulary with a book on Aviation English.