No specific publication just on Qt Creator, there is an on line manual:
ref:
Qt Creator Manual
Also a new book is released on Advanced Qt Programming is available that makes reference to using the Qt Creator:
Advanced Qt Programming: Creating Great Software with C++ and Qt 4
By: Mark Summerfield
Publisher: Prentice Hall
Last Updated: 16-JUL-2010
Pub. Date: July 11, 2010 (Estimated)
Print ISBN-10: 0-321-63590-6
Print ISBN-13: 978-0-321-63590-7
Pages in Print Edition: 560