diff --git a/README.md b/README.md
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+++ b/README.md
@@ -1,40 +1,34 @@
 # Awesome Penetration Testing 
 
 
-A collection of awesome penetration testing resources, tools, confs, magazines, books and other shiny things.
+A collection of awesome penetration testing resources, tools, confs, books, magazines and other shiny things.
 
 
 ## Resources
-
+### Penetration Testing
+* [Metasploit Unleashed](http://www.offensive-security.com/metasploit-unleashed/) - Free Offensive Security metasploit course.
 ### Social Engineering
 * [Social Engineering Framework](http://www.social-engineer.org/framework/) - An information resource for social engineers.
 
 
 ## Tools
-
+### Penetration Testing
+* [Kali](http://www.kali.org/) - A Linux distribution designed for digital forensics and penetration testing.
+* [Metasploit](http://www.metasploit.com/) - World's most used penetration testing software.
 ### Social Engineering
-
 * [SET](https://github.com/trustedsec/social-engineer-toolkit) - The Social-Engineer Toolkit from TrustedSec
-
 ### Anonimity
-
 * [Tor](https://www.torproject.org/) - The free software for enabling onion routing online anonymity.
 * [I2P](https://geti2p.net) - The Invisible Internet Project
-
 ### Networks tools
-
 * [Network Tools](http://network-tools.com/) - Different network tools: pink, lookup, whois, etc.
-
 ### Hex editors
-
 * [HexEdit.js](http://hexed.it/) - Browser-based hex editing.
-
 ### Windows utils
-
 * [Sysinternals Suite](http://technet.microsoft.com/en-us/sysinternals/bb842062) - The Sysinternals Troubleshooting Utilities
 
-## Conferences
 
+## Conferences
 * [DEF CON](https://www.defcon.org/) - An annual hacker convention in Las Vegas.
 * [Black Hat](http://www.blackhat.com/) - An annual security conference in Las Vegas.
 * [BSides](http://www.securitybsides.com/) - A framework for organising and holding security conferences.
@@ -56,13 +50,13 @@ A collection of awesome penetration testing resources, tools, confs, magazines,
 
 
 ## Books
-
+### Penetration Testing
+* [The Art of Exploitation by Jon Erickson, 2008](http://www.nostarch.com/hacking2.htm)
+* [Metasploit: The Penetration Tester's Guide by David Kennedy and others, 2011](http://www.nostarch.com/metasploit)
+* [Penetration Testing: A Hands-On Introduction to Hacking by Georgia Weidman, 2014](http://www.nostarch.com/pentesting)
 ### Windows
-
 * [Windows Internals by Mark Russinovich, David Solomon, Alex Ionescu](http://technet.microsoft.com/en-us/sysinternals/bb963901.aspx)
-
 ### Social Engineering
-
 * [The Art of Deception by Kevin D. Mitnick, William L. Simon, 2002](http://wiley.com/WileyCDA/WileyTitle/productCd-0471237124.html)
 * [The Art of Intrusion by Kevin D. Mitnick, William L. Simon, 2005](http://wiley.com/WileyCDA/WileyTitle/productCd-0764569597.html)
 * [Ghost in the Wires by Kevin D. Mitnick, William L. Simon, 2011](http://www.hachettebookgroup.com/titles/kevin-mitnick/ghost-in-the-wires/9780316134477/)
@@ -72,6 +66,5 @@ A collection of awesome penetration testing resources, tools, confs, magazines,
 
 
 ## Magazines
-
 * [2600: The Hacker Quarterly](http://www.2600.com/Magazine/DigitalEditions) - An American publication about technology and computer "underground".
 * [Hakin9](https://hakin9.org/) - A Polish online, weekly publication on IT Security. 
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