I'm looking for a page with tons of information about the Japanese language. I lost some of my data recently so I'm trying to recover some stuff. I know I got the link here on 4chan, but I don't remember which board I got it from nor when. The page itself had a dark theme, many paragraphs with good explanations, useful tips and materials, and a "Yotsuba Starter Pack" thing as recommendation for practicing reading comprehension. It might not be the best description but I just read it once at the time so I don't remember quite well the content.