Let me just help to know which is the best book that will cover all the topics that are covered in MCSE cert exam 70-270.

Well Microsoft recommend:

http://www.microsoft.com/mspress/books/7870.asp

The exam details also lists some online resources:
http://www.microsoft.com/learning/exams/70-270.asp

I'm taking this class aat my local CC and the books in my bundle are

Microsoft Windows XP Professional: Installing, Configuring, and Administering by Laudon, Rosenblatt, et.al.
ISBN: 0131441329

The lab manual that goes with it (same authors), ISBN: 0131444506

And

Exam Cram 2: Windows XP Professional by Balter and Melber
ISBN: 0789728745

HTH