As far as I know there is no sitting down at all in this game. let alone for hp and mana.

Anyways, can't link you to it where I am, but there are lots of PL beginner videos out there, made for a contest. Searching the home page of STS might lead you to the article on it.

Also, the only screen finger movement commands I have seen are 2-3 fingers in a direction to do emotes.