I also have many of the same questions.
I have something that's a little more towards the actual question though as for as .cap files go.
What I'm trying to make is a character that moves in a "castlevania" esq way.
I can get many of the animations to work properly but they conflict with each other a lot. I'm fairly new with construct and have searched for a few hours and haven't found much to help me.
If you go onto Youtube and look up something like castlevania SOTN Richter you will be able to see what kind of thing I am going for. (Walk, jump, throw, whip, slide, ect).
Any help would be greatly appreciated.