[Saulbadguy]

Originally Posted by NewChief

Star Wars Geeks:

Is there a book or something that covers the time period between EPI and EPII? Specifically, I'm curious how Dooku became the Sidious's apprentice? Did Sidious start grooming him after Maul dies, or had he already been working on Dooku in much the same way he was grooming Anakin for a prolonged period?

No clue. But,

http://starwars.wikia.com/wiki/Dooku

will help.