Linux Bible
Christopher Negus
Applied Cryptography
Bruce Schneier
Practical Cyber Intelligence
Wilson Bautista
Unix Power Tools
Shelley Powers, Jerry Peek, Tim O'Reilly & Mike Loukides
Introduction to Sociology 2e
Heather Griffiths & Nathan Keirns & Gail Scaramuzzo & Susan Cody-Rydzewski & Eric Strayer & Sally Vyrain