If there's one thing Construct Classic has always been spotty on, it's accessibility for new people learning to use it.
You mostly have to seek out as many tutorials that users have informally made, and scour through the Help forum for anything that might relate to what you're doing, for your answers. There is not really a systematized method of "learning how to use Construct Classic." It's much more of an ad-hoc affair.
Hopefully C2 will be better in that regard and I think Tom and Ashley are pretty consciously aware of that stumbling block in CC (thus C2 is full of example files).
The problem is that unless you have super-dedicated folks, or paid folks, you won't get "teachers"
But that'd be unfair to say that, because the people who DO know a lot (newt, lucid, deadeye, and so many others!) have given so much help on the help forums and in their own tutorials, plugins, etc., that it is almost a "school of construct" in that way.