The Game of Thrones wiki without spoilers
Move the dial through the first season and the first book. Entries up to that point open, and the ones after it stay under fog. Once you set your bookmark, every page of the wiki works this way.
Open an entry to see its page at this point. Your bookmark is not saved.
Show or books?
Both. You can count by show episode, by season and episode, or by book and chapter. Every entry has an episode number and a chapter number. An entry that appears in only one of the two stays hidden from someone who counts by the other. When the exact point is uncertain, the later one is used, so an entry is more likely to open late than early.
Where is my bookmark stored?
In a cookie on this device. The server reads it before it builds the page, so entries past your bookmark are not in the page you receive. Without a bookmark, this page carries the first season and the first book for the dial and nothing past them. There is no account and no tracking.
Can I see a hidden entry?
Yes. On the other pages of the wiki, press “Show anyway” on it. The choice is not saved, and every other entry stays under fog.