Looking for WPF study guide

Ive recently begun my journey into WPF and I have a book (Pro WPF in C# 2008) but unfortunately this book does not have any sort of study material, such as end of chapter review questions or critical thinking assignments. Its a great reference book however, very detailed.

However, what I want to know is if there are any books or study guides out there to help me learn WPF instead of just reading about it? Reading is fine, but its very difficult to learn something when all you do is read about it and you aren't challenged to discover answers or test theories.