Here are some resources for students. Links to music theory exercises and listening journals below.
https://www.musictheory.net
https://www.youtube.com/playlist?list=PLjrGHZssO7zHF_uE1AvD2Kl5deJPaEt0k
https://www.youtube.com/playlist?list=PLmhf-cIfsU48QZ8FqVV874nPYjvenaY3NÂ