1 and 2 are, I think, not really implemented yet.
4 : Highlight interactable objects by holding the alt key. Containers are generally not highlighted.
Also, you can highlight creatures and characters by pressing the tilde key (the key left of 1).
5 : Cancel a selected action of any kind by right-clicking. (i.e. it is already set as a default system, though not mentioned in the keybindings. That could be a thing to add in the tutorial info.)
6 : pretty sure it is an upcoming feature.
You might like the following guide on Steam :
https://steamcommunity.com/sharedfiles/filedetails/?id=2250219000
