If you've ever searched for "Billy Korean" when trying to find my videos, you might've stumbled upon another channel called "Korean Billy." Actually, his channel is likely more popular than mine, because he's a Korean who teaches various British English dialects. His videos are also pretty funny.
I've followed his channel since it was new, and I thought it was interesting how he was not only able to learn English (impressive by itself) but also learn several different dialects, and teach those dialects. Fortunately he also heard about my channel, so we were able to meet up together in Seoul and chat.
Billy shared some of his personal tips for learning a foreign language, and we also talked about whether learning dialects helps with learning one's target language or not. If you haven't seen his videos already, definitely check them out too.