Hello Friend, For WPF you can see following book. Windows Presentation Foundation Unleashed, SAMS publications, Author : Adam Nathan For WWF, Version 4.0 is totally different than version 3.5 . We can say that Microsoft has changed WF totally in 4.0 . And currently no book is available for 4.0 . But you can get Beta2 of WF 4.0 and samples from Microsoft side.