[oxfordmerlin]

Hey guys, I was searching through the news this morning and found a story about GCHQ putting a challenge out to potential new employees to test their skills and see if they could crack the code.

heres the link: http://www.canyoucrackit.co.uk/

I was wondering if anybody could go over the basics for me or something or link me to a good tutorial cause this is something i'd like to learn!