Useful Sources for Learning a Variety of Subjects
Korean Learnings
최수수 ChoiSusu: Recommended by her. This channel is perfect for beginners to learn Korean passively.
A Bridge to the World – Korean Language Learning Series from Sungkyunkwan University on Coursera: Free courses with videos, PDFs, practice questions, and more. Very useful.
Chinese Learnings
Nhụy Hy: I don't know who she is. I accidentally came across her radio on YouTube and, since then, have fallen in love with her content. Her voice is so sweet.
Chinese courses on Coursera: Similar to the Korean courses above, these courses are also free, with videos, PDFs, practice questions, and more.
SuperChinese: As its name suggests, this app is a super app, much better than DuoLingo for Chinese learning. Don't hesitate to pay for the premium plan.