If you fell asleep in music class, or skipped it entirely - this course is for you. Just the basics.
Are you embarrassed to admit you don’t know any music theory? If so, stop it. There’s nothing to be embarassed about. Lots of people pick up an instrument without ever learning the basics of music theory.
You can learn a lot of stuff without ever knowing what you’re doing. But if you’re willing to learn the most basic elements of music theory, everything you do will make more sense.