Chase F. answered 11/14/25
Music Theory Tutor – Harmony, Rhythm, Scales & Applied Skills
I think it depends who you are. For most students, music theory can feel daunting, complicated and irrelevant. If that's you, especially at the beginning, don't worry about it. For guitar, learn to play the basic chord shapes or the CAGED system as you need to for whatever songs you want to learn. If you can play C, G, F and Am, you can play about a thousand songs. As you get those down and learn more songs, learn about 7, 9 and sus chords. Focus on what notes are present in those chords. For piano, if you're learning from sheet music or from play along videos. Sheet music requires an understanding of accidentals, keys, meter and other musical notations. Not the most beginner friendly in my opinion. I'd start by playing songs you like. If you're enjoying what you're playing, it's going to build curiosity to start learning the theory behind your favorite songs.
Now if you are a person that really wants to understand things and playing music is secondary to that, I'd start off with the physics behind music. Watch videos on things like the overtone series, harmony, pitch, tuning systems, etc.