I have a Japanese friend in a third group. He learned English to a fairly high level almost entirely by reading English on the internet and watching English sh

I have a Japanese friend in a third group. He learned English to a fairly high level almost entirely by reading English on the internet and watching English shows/movies. He's very fluent at speaking as well, but according to his account, his speaking fluency took a lot of practice (obviously), but didn't come until after he could already almost fully understand and enjoy those things.