What are your experiences with self-teaching music theory? You don’t have to be a 100% autodidact to answer this question; you probably have had times when you read a book or watched a video to learn some specific idea or technique. Ideally, I’d like to compile some guides for readers who don’t have a teacher.
Personally, I prefer close reading of books and articles, but I know that’s hardly a universal approach.
Self-teaching since 2/3 years, with composition as main goal. First I spent some time identifying the main topics (music theory, counterpoint, form, orchestration, jazz, 20th century techniques, post-tonal theory, DAW, etc…) and finding appropriate books (r/musictheory and r/composer where great sources for that). Then, studying these books by taking notes and practicing (listening, composing, studying scores). These notes represent today ~20 PDFs and ~1300 pages.
Younger, I also studied piano and bit of music theory at school.
I must admit I spent more time studying theory rather than actually practicing. I’m currently working to revert that trend ^^