I've been dabbling with WPF for about 6 months now and I'm pretty confident with 90% of the Framework. I read WPF Unleashed by Adam Nathan,cover to cover, twice, to get up to speed but now I'm ready for something more advanced.
Can anyone recommend a good advanced WPF book as a next step?
Thanks in advance.
Programming WPF by Chris Sells is not really advanced stuff, but it has a different cross-cut, so it is a good compliment to Nathan's book.
I've been following WPF books, and at the moment I'm pretty sure there is nothing more advanced than these two.
If you want to go deeper, best way would be trying to modify the standard templates using Blend. Find a designer and ask him to get you some prototyping job. I guarantee you will learn a lot ;)
It's specifically about the 3d part but Petzold's book on wpf-3d is very good.