The SELinux coloring book [pdf]
This trend of using illustration to explain complex topics is really wonderful. I know that people may criticize it as childish, but I find it helpful and enlightening.<p>The illustrations that I've found most amazing and well done are created by people like:<p>Lin Clark (<a href="https://code-cartoons.com/" rel="nofollow">https://code-cartoons.com/</a>)<p>Julia Evans (<a href="http://jvns.ca/zines/" rel="nofollow">http://jvns.ca/zines/</a>)<p>Linda Liukas (<a href="http://www.helloruby.com/" rel="nofollow">http://www.helloruby.com/</a>)<p>Amy Wibowo (<a href="https://shop.bubblesort.io/" rel="nofollow">https://shop.bubblesort.io/</a>)<p>You may notice a trend with the gender of the authors above. I personally believe that women have a better sense for simplifying complex ideas, and greater empathy and patience for teaching those ideas once they've been made simple.