Resources: Digital Learning
Coursera is a leading online learning platform founded by Stanford professors Andrew Ng and Daphne Koller that offers massive open online courses, specializations, and degrees. Courses from Stanford, The University of Michigan, and dozens of others of institutions are offered through Coursera.
edX is a massive open online course provider. It hosts online university-level courses in a wide range of disciplines to a worldwide student body, including some courses at no charge. Self-learners throughout the world can access courses from MIT, Harvard, and dozens of other institutions through edX.