How far are you in Breath of the Wild?

[Peh]

I'm on the quest of finding the last 18 or 17 shrines which is already a pain in the ass. I know where 2 are probably located. Yet, on the first one, I don't know how to get there. It must be somewhere inside the mountain with a huge waterfall. Not at Zora's domain. The other one... well.. Impa guards this sphere thing. I suppose this opens the way to yet another shrine, but don't know how to get it.
The rest of them? I have no clue. There are probably all hidden behind quests. Have yet to find those.