Ahaaa, good!
The Definitive Guide to Google AdWords will SUPERCHARGE and build on the fundamental Google Cash principle, of which is the promotion of affiliate products via AdWords.
Like I mentioned, I haven't finished reading the guide yet, but I have heard nothing but GREAT things about it.
I like the easy, fast methodology of promoting affiliate products via PPC SE's ... and Google AdWords in particular.
Thought I haven't read Rosalind's eBook, I do know it's not all specifically about AdWords. Rosalind is successful mainly for building mini-content (if that's the correct word) niche websites, and then promoting them via a range of marketing techniques. Rosalind is a big supporter of building a list, whereas promotion via AdWords directly to a merchants website prevents you from doing so, for the most part.
Do yourself a favor and
DON'T try read ALL the affiliate marketing eBooks out there -- as you'll end-up WONDERING where to start --
and end up SABOTAGING yourself!
My humble suggestion -- purchase
The Definitive Guide to Google AdWords. That, with Google Cash,
IF IMPLEMENTED, will earn you big cash!
ONLY then ... diversify and experiment with other affiliate marketing techniques