PCs Simplified

Windows 8 Simplified

Troubleshooting with the Windows Sysinternals Tools: Edition 2

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

Easy Computer Basics, Windows 8 Edition: Easy Comp Basi Wind 8 Edi_p1

Simply Windows 7

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

Troubleshooting iOS: Solving iPhone and iPad Problems

Teach Yourself VISUALLY macOS High Sierra

Windows 10 Portable Genius

Mastering Windows Server 2012 R2

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

Windows Internals: System architecture, processes, threads, memory management, and more, Part 1, Edition 7

Windows 10 Simplified: 10 Free Useful Windows 10 Guides

iPhone 5S and iPhone 5C Portable Genius

Rootkits and Bootkits: Reversing Modern Malware and Next Generation Threats

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