https://justpentest.blogspot.com/2015/11/myOSCPreview.html
http://buffered.io/posts/oscp-and-me/
https://jivoi.github.io/2015/06/19/oscp-prepare/
https://gnashsec.blogspot.com/2015/07/my-experience-with-pwk-and-oscp.html
https://www.jimwilbur.com/2017/07/oscp-review/