Windows 7 Simplified

XDA Developers' Android Hacker's Toolkit: The Complete Guide to Rooting, ROMs and Theming

Windows 8 Simplified

Simply Windows 7

Take Control of PDFpen, 3rd Edition

Troubleshooting iOS: Solving iPhone and iPad Problems

Mastering Windows Server 2012 R2

Windows 10 Portable Genius

Learning the bash Shell: Unix Shell Programming, Edition 3

iPhone 6s Portable Genius: Covers iOS9 and all models of iPhone 6s, 6, and iPhone 5, Edition 3

iOS Hacker's Handbook

Linux Device Drivers: Where the Kernel Meets the Hardware, Edition 3

iPhone 5S and iPhone 5C Portable Genius

Chromebook: 101 Tips & Tricks For Chrome OS

AIX 7.2, PowerVM - UNIX, Virtualization and Security, An administrator's guide

Microsoft Windows Home Server Unleashed, e-Pub: MS WIN HOME SVR ULSHD _p2, Edition 2

The Complete Idiot's Guide to Windows 8: Master the All New Microsoft Operating System