In Summer 2018, I led an online seminar on Wittgenstein's Tractatus Logico-Philosophicus. The course was free to any student, and consisted of a mix of lecture and live question-and-answer about the Tractatus. In addition to its philosophical content, the course was an experiment in teaching philosophy online in a cost-effective and open way. As such, it may be of interest to others. The entirety of the seminars are available here.
I hope to arrange another Open Seminar in the future, time permitting. If you are interested in participating – as a teacher or a student – please email me.