Knowing it affects monsters differently is good.
Also once I realised you can leave a monster fight as long as you don't use an action, that helped. I could save weaker enemies to spam respite for heals.
The symbols associated with them also took some time to figure out.
The first one is how full the hearts get and the last is the tempo gauge, I don't know what the middle one is. The log seems to have a description for it, but at least on the free version, it just reads 'new text' on everything