The Linux Mint Beginner's Guide - Second Edition

The Ubuntu Desktop Beginner's Guide - Second Edition

The Linux Command Line Beginner's Guide

Ubuntu: 101 Tips & Tricks

The Windows Command Line Beginner's Guide - Third Edition

Windows 8.1: 101 Tips & Tricks

Shield of Darkness

Shield of Deception

Shield of Conquest

Shield of Battle

Ghost in the Assembly

Ghost in the Tombs

Cloak of Illusion

Dragonskull: Wrath of the Warlock

Dragonskull: Doom of the Sorceress

Dragonskull: Crown of the Gods

Ghost in the Corruption

Shield of Storms