RT Essentials
Richard Foley
RESTful Web APIs
Leonard Richardson & Mike Amundsen & Sam Ruby
Teach Yourself Electricity and Electronics, 6th Edition
Stan Gibilisco & Simon Monk
SELinux System Administration
Sven Vermeulen
Linux Administration: A Beginner's Guide, Fifth Edition
Wale Soyinka
Networking the Complete Reference, Third Edition
Bobbi Sandberg