The links below for some lessons basic music theory and jazz theory
Jazz music theory assignment
Make sure you hook up with a teacher or school that puts it’s money where it’s mouth is and produces students that can actually play and get work. What you don’t want is a school that Just cranks out more professors who sit in ivory towers and write and play music no one can listen to, or even worse; write long, ponderous and useless tomes bout it that no one can make any sense out of or use. Music theory and Jazz theory is really nothing more than a set of devices successfully used by composers in the past. These tend to become “ rules” and overused because they work.
Listeners jazz music theory By Psalmist of mathematics that validates this as well but I am no mathematician and do not need to be one to do what I do. Devices like cadences, the rules of counterpoint, intervals, act like grammar does for a writer. These are the musicians periods and commas. Play a V to I progression to someone who knows nothing about music and hey can tell you immediately that it means “ the end”. Play that same person a deceptive cadence and they can tell you that it means “ there is more to come”.