this is really good
you teach all these other classes too or these are from other people?
Here is the Upper-Intermediate Level course. Only 9000 Zaps for lifetime membership of ANY course on my website. If you like my classes, zap me 37000 sats for a 60-minute private class. There are many more subjects you can learn for sats - Spanish, Mandarin, English, Russian, Ukrainian, Yoga, Maths, Sign Language, Thai Boxing, Linux + OPSEC, Healthcare for the elderly, tin whistle, flute, uileann pipes, parenting skills
https://www.skype-lessons.com/courses/master-english-conversation-upper-intermediate-level
https://blossom.primal.net/8452f2701c1bce7357e60f75931fb5334816184f424620927e3427146954ff41.mp4
Discussion
I teach English (to foreign students and natives) and philosophy. Other nostriches (whom I know) teach the other subjects. If you want to learn a subject, I will point you to the relevant teacher. Just ask