Chris Sells seems to be 'dah man' with regard to Windows Forms and WPF:
  http://www.sellsbrothers.com/writing/
  http://www.sellsbrothers.com/writing/wfbook
  http://www.sellsbrothers.com/writing/wpfbook
Also well taking a look at Charles Petzold as well:
  http://www.charlespetzold.com/winforms/index.html
MS also have a heap of stuff related to design guidelines and usability from a windows perspective:
  http://msdn.microsoft.com/en-us/library/aa152962.aspx