Is it possible to learn all of music theory in an hour? Nope.
However, it is VERY possible to get a great understanding of the main concepts. Music theory is very fractal in nature, much like a snowflake. The same concepts build upon each other, and become more complex. The small building blocks, however, are not complicated.
This is one of my most popular YouTube videos. On that platform I am Ross the Music Teacher.
I will be posting tons of guitar lessons here, embedded as my YouTube videos. :) Please enjoy this thorough music theory crash course!
---> A couple typos in the video exist. I was new at animating this stuff at the time. I believe Eb is missing from the circle of fifths, and there are a few audio errors.