Here's a little-mentioned but excellent deal.
2+2 (for those who don't know) publish the majority of the best-regarded poker books. They also run the biggest poker forum (the 2+2 forums are huge).
A little while ago 2+2 also became an affiliate of certain poker sites. They offer 5 free books to anyone who signs up to one of the rooms they promote, & then meets the minimum deposit / play requirements.
At present they promote several sites. Here is the good bit: For one of those sites (Everest) all you have to do is signup via 2+2, deposit $50 & play any amount. I.e. there are effectively no minimum play requirements, you just signup, deposit & play microstakes for a few orbits & that's it.
I have done this offer & so has my brother & it worked exactly as described. We literally only played enough to earn 1 Everest point each (& even that was probably more than required) i.e. just played for a few minutes in one micro-stakes game.
In our cases the books turned up within a couple of weeks (although they say to allow longer).
I just withdrew my money afterwards (although Everest is a nice site & the bonus clears tolerably well if you actually want to play it).
Disclaimer: I have no connection with 2+2, other than getting free books off them
To put a value on this offer, you could, for example, choose the following 5 books (I've included their current price as of today on Amazon.co.uk)
Harrington on Cash Games: £36.00
Harrington on Hold 'em: £20.97
Sklansky on Poker: £29.95
Inside the Poker Mind: £29.95
Winning Low-limit Hold 'em £22.95
So that's approximately £140 worth of books for a few minutes work & no risk.
Here are the links you need:
Everest-specific signup page: http://www.twoplustwo.com/bonus/everest.php?UID=
Forum relating to book offer: http://forumserver.twoplustwo.com/91...bonus-program/
Thread discussing Everest: http://forumserver.twoplustwo.com/91...s-113512/index
Final point - for those who do go for this make sure to follow the 2+2 instructions exactly to ensure you track OK.