CompTIA A+ Complete Practice Tests
Audrey O'Shea & Jeff T. Parker
Regular Expressions Cookbook
Jan Goyvaerts & Steven Levithan
Python Pocket Reference
Mark Lutz
31 Days Before your Cisco Certified Support Technician (CCST) ...
Allan Johnson
CompTIA Linux+ and LPIC-1 Guide to Linux Certification - 6th ...
Jason Eckert