I have significantly improved the Crazier Eights rulebook for the new games to be printed soon, and it has been updated multiple times over the last year. It was last updated in February.
The new rulebook can be found here.
To see the progress that has been made on rule book content & design, take a look at the original rulebook from 2014 here.
If you see any problems in the rulebook, you can let me know here.