You may find that the explanations above, as relevant as they may be, a little unsatisfying. You are obviously enthusiastic but you are leaving great gaps in your learning if you do not start learning music theory from scratch.
If you do not want a formal education, use the internet. You can choose the websites you want and can move at your own pace BUT. Be very careful which
websites you get into, some on you tube are made from people who have had a few music lessons and suddenly set themselves up as teachers. Just check that the websites are from qualified teachers or organisations and your enjoyment will increase. Good luck