How can a person who lacks a strong quantitative background get up to speed using online education resources?

I’m 36, and am realizing more and more that my lack of quantitative education and experience is preventing me from achieving my potential as a professional. Over the next year, I’d like to strengthen my quantitative thinking skills, and build up my foundation in stats and analytical reasoning. I’d like to do this using distance education. Any thoughts on what the best distance learning for this sort of thing is?