Hello everyone!
Recently, I've been studying the Van't Kruijs Opening (A00) on Lichess. It might sound strange, but this opening is extremely effective, especially if you're a positional player. If you're interested, you can click on this link ( https://lichess.org/study/9KkRy4Hx/jEnRpwui ).
Oh, and you don't need an account on Lichess!
Maybe, in the future, I will create versions in other languages. Anyway, if you have any questions or suggestions, please send them in the chat here or in the study.
Note: I also have the content in Portuguese, though I don't know if there are many Portuguese speakers here. Anyway, the link is ( https://lichess.org/study/gwUAZfQ4/hjTUyMwR ).