Obviously there is the main rocket tutorial, but since a lot of people are creating more and more planes, there should be a tutorial on how to properly build a plane.
Tutorial would include:
- Where the COL should be relative to the COM.
- How to reduce drag.
- How to properly use the jet engine settings.
Another basic suggestion by DeboStreams.
I always see people asking how to properly build a plane or "My plane keeps flipping!".