Doing some music theory self-study

Doing this for probably the 5th time already. But I'll try to be more focused and consistant this time, really!

My music theory book. Nothing much to say about it
except it's bigger than my usual A5 notebook.

Also, if I actually do get back into piano lessons with a tutor again, I can also use that as an opportunity to learn some music theory, as well. But I've also been suggested to do a music theory course at my university if using a private tutor isn't going to happen. I don't know exactly which direction I want to go right now, but man, I really want to get better at this.