I sort of learnt it from books I got in the bookstore and school library. I will not name them, because they're not in English. At the same time I spent 8 year

I sort of learnt it from books I got in the bookstore and school library. I will not name them, because they're not in English. At the same time I spent 8 years learning it day in day out in high school and university, so it's hard to tell how far you'll get with just self-learning. It also depends on what you want to do with the knowledge. Perhaps just go book browsing to a library that has a good set of books about electronics, to find what you mind be the most interested in. Libraries associated with electotechnical schools typically have plenty of these books.