Yes... Music theory can be challenging to understand. What's with all of the sharps and flats? The Nashville number system? What do you mean by the "tonic?" Will this make me a better musician? The short answer is yes! By taking music lessons, whether its guitar, piano, banjo, mandolin or voice, understanding the " why & how " of music will make your playing easier. And you will be able to jam aka improvise with others. Maybe you are a songwriter, and you can't find that " magical" chord...