Yesterday, I started looking at WPF, WinFX, XAML, etc.  I started with Chris Sells and Ian Griffiths: Programming Windows Presentation Foundation, but that book was published in September, so it's way out of date. It's a pretty decent read anyway, and I look forward to the release edition, but don't actually try the examples with the Feb CTP, they are from an alternate universe, very much like our world, but with goatees (if you're going to try anyway, check out the Change Notes).

No, on the bleeding edge, books are so six months ago. Much better to hit the web. But, google is littered with docs and workarounds from past versions. Only very specific searches are likely to return relevant hits.  If books are a fading moment in time, the web is all of those moments at once, all treated equally.

Better to stick with official sources. The official SDK docs are here, and they are tracking the actual released code pretty well. The MS WinFX site has some pretty well documented labs that are only slightly out of date (start with changing your namespace declarations at the top of the XAML files to 2006 versions). And of course, you'll have to have the latest version of everything.  I'm finding that successful builds include lots of reported errors that seem not to be true -- nice of Visual Studio to go ahead and build it anyway.  Specifically, imported CLR namespaces in XAML seem to confuse the error reporter, but work as expected.

Kathy Sierra says that all of this is helping me learn:
People usually learn much more from failures than from being shown everything working correctly or as expected. The most memorable learning experiences are usually those where things are going along fine, making sense, etc. when you suddenly slam into something that goes terribly wrong. Describing the things that do NOT work is often more effective than showing how things DO work.
Ok then.