All of the suggestions so far are good ones -- Coursera, Khan Academy, MIT Open Courseware, etc. are all great resources. But as someone who does stats and analytics for a living, I also suggest creating a project for yourself to test what you've learned. What are you into? -- sports, finances, politics? Try to research a question you have about the world -- there are so many open-source datasets out there. It's one thing to just play with the mock data they provide in those courses; it's another to have to dig through, clean up, sort, transform, analyze, and present your own raw data.