Music Theory Comprehensive: Part 8 - Harmonic Expansion
Jason Allen
MuseScore (Part 1): Quick Start Guide
Martin Cohen
The Definitive Guide to MuseScore
Jonathan Alter
MuseScore (Part 2): Menus, Navigation & Customizations
MuseScore (Part 3): Entering notes, rests & more / Editing your score
MuseScore (Part 4): Adding elements to your score
MuseScore (Part 5): Parts, Playback looping, Export, Plugins