Pessoal lá na minha faculdade ta divulgando esse site: Khan Academy Achei MUITO útil, principalmente pra quem é da área de exatas.
Tem vídeos sobre mercado financeiro, algebra, calculo, estatistica etc etc etc. Material de ótima qualidade.
The Khan Academy is an organization on a mission. We're a not-for-profit with the goal of changing education for the better by providing a free world-class education to anyone anywhere.
All of the site's resources are available to anyone. It doesn't matter if you are a student, teacher, home-schooler, principal, adult returning to the classroom after 20 years, or a friendly alien just trying to get a leg up in earthly biology. The Khan Academy's materials and resources are available to you completely free of charge.