For the math: MIT OCW Scholar and maybe Klein's Coding the Matrix.
For AI specifically, MOOCS on Coursera, edx, and Udacity will give you plenty of options. The ones by big names like Thrun, Norvig, and Ng are great places to start.
It really helps to already be comfortable with algorithms. Princeton's MOOCs on Algorithms by Bob Sedgewick on Coursera would be a great place to start.
For AI specifically, MOOCS on Coursera, edx, and Udacity will give you plenty of options. The ones by big names like Thrun, Norvig, and Ng are great places to start.
It really helps to already be comfortable with algorithms. Princeton's MOOCs on Algorithms by Bob Sedgewick on Coursera would be a great place to start.