From Wikipedia: The Metasploit Project is a computer security project that provides information about security vulnerabilities and aids in penetration testing and IDS signature development. Its best-known sub-project is the open source Metasploit Framework, a tool for developing and executing exploit code against a remote target machine. Other important sub-projects include the Opcode Database, shellcode archive and related research. The Metasploit Project is well known for its anti-forensic and evasion tools, some of which are built into the Metasploit Framework.
95% of Security professionals use distribution like Kali Linux/Backtrack which consists tons of tools that aids pentesters to perform audits and Metasploit Framework is highly sophisticated tool. The course is designed as a complete guide to understand and handle Metasploit Tool efficiently in real time.
This is online certification Course by InSEC-Techs and your doubts related to the subject are solved for ever on discussion board. We provide you material and references to get more understanding and learning this tool.
The course is very well structured, explaining the terminologies , functionality and lab practicals are very well shown as feeding baby a banana.