Hi @Жика Welcome to the instructor community. Since we function primarily as an on-demand, video-based platform, you’ll need to upload your video files directly to Udemy. In other words, students must be able to view your course lectures on the Udemy platform. You can start creating your course via this link.
Yes, you can change the languages of the Udemy website and you can also create courses in the language you prefer. You can find more information about changing languages here.