If your restoration staff is not leveling up as you kill enemies, make sure you have the restoration staffs weapon bar selected when killing enemies. You can also try swapping to a different weapon, then back to your restoration staff and see if the progress bar will update.
Bosmers sneaking past all the dangers in the woods. Come upon a cultist doing a ritual? Sneak past. Come upon a brigand ambush? Sneak past. Come upon a mighty beast? Sneak past. The feeling of “yesssss” when you can squeeze by in tight spaces unnoticed. Sometimes I’m able to take what I need from right under their noses.