There's Quantum Information Science (https://www.edx.org/course/quantum-information-science-i https://www.edx.org/course/quantum-information-science-i) on edX.

There's Quantum Information Science (https://www.edx.org/course/quantum-information-science-i https://www.edx.org/course/quantum-information-science-i) on edX. Pros: - It's an MIT graduate class (this could be a con if you are a beginner in other areas and not just in quantum computation). - It's taught by Isaac Chuang (of Nielsen & Chuang, the leading textbook on quantum computing) and Peter Shor (of the Shor factoring algorithm, the most famous quantum algorithm). Cons: - Shor does 90% of the lectures, and he is... not a good teacher. - When I took it, there was almost zero support (e.g., when there were bugs in the problem sets). I'm glad I took it, because it induced me to learn a bunch of material I had been wanting to learn for a while, but compared to what it could have been it was pretty disappointing.