Mixed reviews from some on "Training and Racing With a Power Meter" insofar as its apparantly being geared towards WKO+ (I'm on a Mac, don't need that) and not really having detailed training information in the book itself, directing you more towards their subscription-based site. This true?
Well, that'd depend on what you understand by detailed training information.
They explain how to figure out what kind of rider you are and how to assess your strengths and weakness, using the tools available in WKO+. If your software provides the same tools, cool, if not, you need to figure it out yourself, but the books still explains what you're looking for.
You do have to read and understand what they are saying instead of just klick this, look at figure x, compare to y, tada.
If you're willing to do that, it will be worth your money and time.
And they do provide a ton of power based work outs and, IIRC, two sample training plans, that might be worth your money alone, if they they suit your.