Please have a look at this StackOverflow post, which has a list of book recommendations.
In terms of best practices, get familiar with the M-V-VM pattern. It seems to have gained the most traction in WPF-land.
Check out this post for what tools you can use for WPF development.
The MSDN Forum is a great place for resources, as is the MSDN help files on WPF.
My personal recommendation is for you to forget everything you have learnt about WinForms. WPF is a totally different model, and once I finally dropped my “I did it this way in WinForms, but that way doesn’t work in WPF” I had one of those “lightbulb” moments.
Hope this helps!