I've been watching this series for a general introduction into the math behind quantum computing, and would recommend it: "Quantum computing for the determined"

I've been watching this series for a general introduction into the math behind quantum computing, and would recommend it: "Quantum computing for the determined" by Michael Nielsen http://www.youtube.com/playlist?list=PL1826E60FD05B44E4 http://www.youtube.com/playlist?list=PL1826E60FD05B44E4