I thought I'd make a universal help page for Jiub's Opus since there never was one in the beta forum and I'm sure the forums will get flooded with help threads relating to a single page. I will update the information below regularly, in case anyone else finds one and decides to share

Page 3: As you enter the Soul Cairn, follow the direct path until you see a soul sitting upon a wall. He should be a few paces next to a tall building. Inside the building is a little chest in the corner along with Page 3 of Jiub's Opus beside it(If I remember correctly...?). You'll get ambushed by a boneman too so be careful

????: Head all the way to the westernmost side of the map until you hit a barrier. Skim along the barrier until you hit the wall. There should be a building connected beside it with a chest and a pathway that leads up to a building with a giant soul gem on top of it (make sure to stock up on Soul Husks!). Head up the building to the chest directly below the soul svcker and the next opus page should be beside it (I forgot the page number!)

????: Go all the way to the wall and skim alongside it (passing the stairs that reaches into the second section) until you come up to a little grating with a soul standing beside it and the next page of the opus sitting beside it.

the above, as of now, are all mine, but I can't seem to remember the page numbers. If someone would be so kind as to go find them and tell me, I will update them!

EDIT: oh crap! I posted this in the wrong section! mods please move.

Shouldn't this be in the spoiler section?

yep sorry I did a wrong posting. I'm sure it will be moved sometime soon

We had one in the beta forum. There were like 2-3 of them for just this quest >.< (people don't know how to use the search function not saying you don't just that most other people don't)