Doing a Google search for "Ubuntu for Windows Users" gives
https://help.ubuntu.com/community/SwitchingToUbuntu/FromWindows
I didn't see any Windows to Ubuntu conversion books on Amazon but the
Google search showed several places to look.
Oh, if you did not know, there is also the free "Full Circle
Magazine". Over one million downloads can't be wrong...
http://fullcirclemagazine.org/