MIT's 8.05x, Mastering Quantum Mechanics (https://www.edx.org/course/mastering-quantum-mechanics-mitx-8-05x https://www.edx.org/course/mastering-quantum-mechani

MIT's 8.05x, Mastering Quantum Mechanics (https://www.edx.org/course/mastering-quantum-mechanics-mitx-8-05x https://www.edx.org/course/mastering-quantum-mechanics-mitx-...) It's the only MOOC I've taken that was anywhere close to the kind of experience I had as an actual undergraduate at MIT. Outstanding lectures with accompanying lecture notes, challenging but rewarding problem sets, lots of interaction by the professor and other staff in the forums. It's not a course in the sense of having problem sets and grades, but V. Balakrishnan's lecture series on classical physics (https://www.youtube.com/playlist?list=PL5E4E56893588CBA8 https://www.youtube.com/playlist?list=PL5E4E56893588CBA8) is amazing, just incredibly dense with insight.