if i believe right, math that is relevant to computer science is mostly linear algebra and discrete mathematics. google lecture notes for that. if you want to get serious buy introductory undergrad textbooks for those subjects and go through the excersizes. look up university sillabi on courses like that because they can act as a reading guide, because they have which chapters are pertinent and which excersizes you should attempt etc.
Linear algebra is good, discrete math as well.
Here is something that you might find useful.
http://ocw.mit.edu/courses/electrica...nce-fall-2010/
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-fka Redbrother