The people at Offensive Security (maintainers of the Back Track distro) have developed an online free course to master the Metasploit framework called:
3x0t3r1cVs is a Cantabrian guy living in Pamplona and working as a Developer and Security Engineer, who likes writing haikus, learning stonemasonry and woodcarving... and that shares this virtual place, and a real-life, with his beloved woman... mundana mundi.