Metasploit: A Penetration Tester's Guide from David Kennedy, Jim O'Gorman, Devon Kearns, and Mati Aharoni is probably the foremost resource one can obtain for learning the basics of the Metasploit framework. The book is for those behind the curve a little bit and haven't used Metasploit yet. I feel like the book does a great job of delivering on what it promises, a foundation knowledge of the ins and outs of the great framework. By the time you finish the book you should understand how to use the framework; you most likely will not understand all of it, but it gives you great information on how you can figure it out really through utilizing the many utilities within the tool.

By Mike Ahrendt