Count Zero,
I think you have to visit the sites individually and click on their 'player points' links to work out how quickly you will accumulate the points (obviously you will need to come back to this site and use the links here to join up tho).
I play mainly SnG's and joined Everest for the free books. It was totally painless - I think you only need to play 1 RH/tournament to be eligible for the books.
Earning their bonus tho, takes a little more work
Now I'm on the lookout for my next site to take advantage of the books offer. I was thinking about Skypoker, but following comments on another thread, I may have to reconsider.
Can anyone else make some recommendations?
Garr