1. Find the first page: In the game, you can talk to Urgro Shubu, a lecturer in Winterfell, and he will tell you that there is a lost book called Tomb of the Soul Stone. This is the first step to trigger the task. Next, you need to go to the black book cemetery to find the first page.
2. Find pages 2 to 9 in Edith's Black Book Tomb: All pages except the first page can be found in the Black Book Tomb, and each black book tomb can find one page. You can use maps (which can be found in the Winter Support Library) or look for clues of soul birds to help you find these cemeteries.
3. Find Page 10 on Solsta Beach: After finding all the first 9 pages, you need to go to Solstheim to find Page 10. This page is in a small hole on the beach. You need to go into the cave and find page ten.
4. Complete the task: After finding all ten pages, you can take them back to the Winter Support Library to show them to Uragra Shubu. He will tell you how to enter the black book cemetery and trigger the task "Black Book: Journey of the Soul". After completing this task, you can gain powerful magic skills and succeed.