Since I have two computing-related books to review and have not finished them yet, I'll let you in on the locations thereof. Both have online free versions in various places; here's some that I know about.
THE ART OF UNIX PROGRAMMING by Eric Raymond
Mr. Raymond has been around programming since way the hell back and offers this best-practices book that can do at least three things: document the early computing culture, acclimatize programmers to the Unix world that may have come from other environments and focus the efforts of other programmers who are Unix-native. Here's one of the book's many online homes:
Click HERE
NMAP NETWORK SCANNING
The Official Nmap Project Guide to Network Discovery and Security Scanning
by Gordon “Fyodor” Lyon
Living at the venerable nmap.org, this is a less-than-complete version (buy it to get everything) but this version is merely lacking in all examples and extended discussions. All the basics are here. The tool's free and the bad guys use it, too, so if you're a White Hat Wannabe like me, you have no choice but to get right with Nmap.
Click HERE
So now, let's see if I can finish these before you do - and before you scoop me on your blog.