<p>Sounds like you’re in the same boat as me… it’s been way too long since I did any history/theory! I’ve been ignoring the theory for the time being, but I found the chapter revision notes for the Norton Concise History of Music really good. Just do a search on Norton concise history of music, and click on the chapter outlines. There are also quizzes to test each chapter.</p>
<p>Good luck and come back and share if you find any particularly good theory sites!</p>