grep Pocket Reference
John Bambenek
Linux in a Nutshell
Arnold Robbins & Ellen Siever & Stephen Figgins & Robert Love
Hands-On Software Engineering with Python
Brian Allbee
CompTIA Linux+ Guide to Linux Certification
Jason Eckert
Basics of Web Design: HTML5 & CSS (5th Edition)
Terry Felke-Morris
Intro to Java Programming, Comprehensive Version
Y. Daniel Liang
Introduction to Java Programming and Data Structures
Comprehensive Version