Just for your own amusement..... I followed the link so that I could come back and say how wrong you were. My head ache is your payoff!!!!!! :)
CException Property "SiteController.bodyClass" is not defined.
Maybe later then!
Having examples for using nmap can be really hand to get an idea of what you do with it, and there's a lot you can do.
I like the idea of this site anyway, good luck in your further developments!
It's now nearly 20 years old, and the most recent (3rd) edition was published in 2002, and very likely could use some very serious updating, though it still remains useful. But in terms of books that really bumped up my game for understanding Unix (then dominant) and Linux, this book was key.
http://shop.oreilly.com/product/9780596100292.do
And its probaly easier to use
https://news.ycombinator.com/item?id=6360320
https://news.ycombinator.com/item?id=6046682
https://news.ycombinator.com/item?id=5022457
https://news.ycombinator.com/item?id=4985393
I have also created a couple screencasts about the "Filesystem Hierarchy Standard" @ http://sysadmincasts.com/episodes/12-crash-course-on-the-fil... and a "Crash Course on Common Commands" @ http://sysadmincasts.com/episodes/13-crash-course-on-common-...