Source : http://blogs.technet.com/belpta/archive/2009/12/06/free-exchange-2010-by-mvp-jaap-wesselius.aspx

Fellow MVP Jaap Wesselius has published a great Free E-book on Exchange 2010.
You should definitely have a look at this book as it takes a practical approach to the new Exchange 2010 Platform

Table of Contents

• Chapter 01: Introduction to Exchange Server 2010
  Chapter 02: Installing Exchange Server 2010
  Chapter 03: Exchange Server 2010 Coexistence
  Chapter 04: Managing Exchange Server 2010
  Chapter 05: High Availability in Exchange Server 2010

Why read this book?

As the backbone to so many commercial communications infrastructures, Microsoft’s Exchange Server technology has become a critical component in many an IT department. With the latest incarnation of Exchange Server on the horizon, and indeed almost upon us, it is becoming increasingly urgent that SysAdmins get to grips with this latest-and-greatest technology. What’s new? What’s gone? What’s easier or harder? Jaap touches upon all these essentials.

As a practical field-guide to Exchange Server 2010, this book will tell you exactly what you need to know to get started with upgrading, installing, configuring and managing your new Exchange Server. If you need to get to grips with Exchange Server 2010 fast, or want a short, to-the-point, practical guide to Microsoft’s latest offering, then you should read this book.

Get it over here:
http://www.simple-talk.com/books/sysadmin-books/exchange-2010---a-practical-approach/