I have been following Wendover Production on Youtube for a long time. They publish interesting stuffs with a lot of focus on aviation.
Now this one -
https://www.youtube.com/watch?v=dGXahSnA_oA
Explains hub concepts really well.
Great channel, have also been following him since his first video the one about marketing. He gives great information regarding aviation. Though not aimed at the aviation community or to us avgeeks. It is usually simplified and not to the depth that I would like. I will make a list of the videos which might be beneficial for the AS experience:
https://www.youtube.com/watch?v=NlIdzF1_b5M
https://www.youtube.com/watch?v=BzB5xtGGsTc
https://www.youtube.com/watch?v=dGXahSnA_oA&t=338s
He certainly got great educational videos about various topics but regarding aviation these three should pretty well relate to AS and I suggest anyone playing or intending to play AS should watch them. hczeitgeist also linked the last video.