I remember my days before, Microsoft SQL Server PFE. I wanted to learn everything and know everything about SQL Server. However, getting hold of good resources was tough, as I didn’t have any mentor when I started down my journey to becoming a SQL Server Database Administrator.
Along the way I did pick up lots of books and references. One of such books is Dissecting SQL Server Execution Plans.
I read this book before becoming PFE, I read this now, and I recommend everyone read this book more then once.
Grant Fritchey (Blog|Twitter) wrote the book back in 2008; I would still recommend take ready. This book will only help you be better DBA and Developer.
SQL Central, Jeff Moden, Dissecting SQL Server Execution Plans
http://www.sqlservercentral.com/articles/Book+Reviews/69019/
Amazon, SQL Server Execution Plans
SQL Central, Red Gate, EBook
This post is cross posted on my SQLCAN Blog, MSDN Blog, and SQL server Consultation blog.
SQL Canada (SQLCAN) 
Thanks for the kind words. Just so you know, it’s been updated since 2008. There was a second edition in 2012. I’m actively working on another edition now.
Cool. Did not know that, just found the 2nd edition link :).
Will definitely will be reading it next once I am done current book :). Thanks for comment :D.
Also found the ebook version.
http://www.red-gate.com/library/sql-server-execution-plans-2nd-edition
When you release 3rd edition please let me know, will love to read it :).
Go on an SQLCruise when he is presenting and he will give you a copy.
Also look for Benjamin Nevarez books on the optimizer.
Thank-you will definitely add it to the list to read :).