Maybe this question has been asked before. I could not find. I am self-learned amateur guitar player. and I play for quite long time (around 10 years) and not playing jazz/blues bad but I feel not progressing sincefor a very long time.
The reason is that I have no idea about the theory of music like intervals, chord progressions etc.
My question is : How to enter to jazz theory ? Because there are lots of sources that are not accessible for me. Where can I start to learnlearning jazz theory by myself ?