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/