There are many lectures that are paid but lack teaching skills and don't receive feedback even when posting QnA. It's been a while since I've found a good lecture. Thank you! I think it's a really neat and simple lecture. They also upload all the lecture materials, so it's easy to study. The difficulty level is really for beginners. If you've learned another programming language, you can skip through it at 2x speed and it's enough. I really recommend it to anyone who wants to learn the basics of Java!