Hi there,

We have a number of lessons on music theory that are baked into our Core Learning System. So If you haven't already, be sure to check out the Core Learning here:https://www.guitartricks.com/beginner.php

If you want a brief overview of music theory, Christopher has a great tutorial here: https://www.guitartricks.com/tutorial.php?input=495

And remember, you can always use the search button at the top right to search for "music theory."

I hope that helps.