MCSA Windows Server® 2012 R2 Installation and Configuration ...
William Panek
The Art of Deception: Controlling the Human Element of Security
Kevin D. Mitnick & William L. Simon
Linux Basics for Hackers: Getting Started With Networking, Scripting, ...
Occupytheweb
Invent Your Own Computer Games with Python
Al Sweigart
How Linux Works: What Every Superuser Should Know
Brian Ward
Linux Firewalls: Attack Detection and Response
Michael Rash
The TCP/IP Guide: A Comprehensive, Illustrated Internet Protocols ...
Charles Kozierok
The Linux Command Line, 2nd Edition: A Complete Introduction
William E. Shotts Jr.
The Book of Inkscape: The Definitive Guide to the Free Graphics ...
dmitry kirsanov
The Linux Programming Interface: A Linux and Unix System Programming ...
michael kerrisk
The Book of GIMP: A Complete Guide to Nearly Everything
olivier lecarme & Karine Delvare
IRC Hacks
Paul Mutton
Raspberry Pi Hacks: Tips & Tools for Making Things With the ...
Ruth Suehle & Tom Callaway
Microsoft Windows Networking Essentials
Darril Gibson
The Artist's Guide to GIMP: Creative Techniques for Photographers, ...
Michael J. Hammel
Wicked Cool Shell Scripts: 101 Scripts for Linux, Mac OS X, ...
dave taylor
Penetration Testing: A Hands-On Introduction to Hacking
Georgia Weidman
Python Crash Course: A Hands-On, Project-Based Introduction ...
Eric Matthes
Reversing: Secrets of Reverse Engineering
Eldad Eilam
Perl Hacks: Tips & Tools for Programming, Debugging, and Surviving
Chromatic & Damian Conway & Curtis 'Ovid' Poe
The Linux Command Line