Tsahi Levent-Levi is an Israeli WebRTC consultant and one of the most authoritative independent voices on the WebRTC stack — the browser API and protocol family underneath every modern real-time video / voice / data application (Zoom, Discord, Google Meet, every browser-native voice and video app). He runs BlogGeek.me and the WebRTC paid course catalog at WebRTCcourse.com.
His CourseFlix listing carries three WebRTC courses: Low-level WebRTC Protocols, Higher-level WebRTC Protocols, and Advanced WebRTC Architecture. Together the courses form the most comprehensive WebRTC syllabus available outside the original protocol RFCs.
Material is paid and aimed at engineers building production real-time communication applications. For broader content, see CourseFlix's WebRTC category page.