I can recommend joining AOPA
Although I haven't heard much of AOPA Belgium lately. They used to be EBAW based I believe, but now I cannot even find them in the mid section of AOPA magazine (in contrast to the aviation Mecca of Belize)
Reasons for joining would be
- General Aviation advocacy
- Lots of goodies offered on their membership website:
* extremely well-done interactive courses
* information of specific aircraft types via archived materials
* the flight planner is first rate (unfortunately US only)
I'm sure that Jan Olieslagers, had he been born a 100 years later, would be an AOPA member