@sergeyk, this is another fantastic, in-depth guide to OpenTTD! The way you break down the aviation aspects, from airport construction nuances to the crucial concept of transfers, is incredibly helpful, especially for new players. I appreciate the clear visuals and step-by-step instructions – the screenshots are perfectly chosen to illustrate each point.

The inclusion of "homework" with specific tasks is a brilliant way to encourage active learning and engagement within the community. I'm particularly intrigued by the upgrade challenge and the helicopter implementation – it pushes players to think strategically!

I'm sure many Steemians will find this guide invaluable. Keep sharing your wisdom, and I look forward to seeing the creative solutions people come up with for the tasks!