http://www.red-gate.com/community/books/sql-server-execution-plans-ed-2?utm_source=ssc&utm_medium=publink&utm_campaign=books&utm_content=executionplans_ebook&utm_term=executionplans
Free eBook from those fine gents at SQL Server Central: SQL Server Execution Plans, Second Edition By Grant Fritchey. Who doesn't need to know more about execution plans? Well, except for Mr. Fritchey.
Go!
Thanks Patrick. Execution plan reading is a valuable skill for developers and DBA-s.
Here is another (unrelated) free e-book:
Introducing Microsoft SQL Server 2014
Kalman Toth Database & OLAP Architect SQL Server 2014 Design & Programming New Book / Kindle: Exam 70-461 Bootcamp: Querying Microsoft SQL Server 2012
Patrick, here is the full list of free e-books: Red Gate ebooks. See "SQL development" and "SQL DBA" tabs.
José Diz Belo Horizonte, MG - Brasil