Trying to learn and teach the game tonight but everybody got discouraged before we could figure out what to do.
I wouldn't try to learn and teach Vast at the same time, because then the game might seem more complicated than it really is.
I haven't received the game yet, but I've read the rules with thought, watched the videos and made some notes and corrections to the printed rule book. Now I think I have a good understanding of the rules (but as I said, I haven't got the game yet, so I think there might rise some issues when I finally get to try the game in practice). So preparation is the key.
Although I'm still dreading the situation when I have to teach the game to my gaming group and play a 5-player game But I think it will go fine.