Can I read a tome in Other Worlds?
The FAQ on Fantasy Flights website covers this question.

Q: Characters in Other Worlds receive no movement points. But if a character in an Other World has an item that gives them movement points, such as the Motorcycle or Ruby of R' lyeh, can the character use an item that requires the character to spend movement points, such as the Necronomicon?
A: No. You can not receive movement points or use any item requiring movement points while in an Other World.