Scientists are lifelong learners, continually absorbing information from journal articles, conferences, and discourse with colleagues. Sometimes, though, a more formal or organized form of learning is desired. In that case, where is the budding or established scientist to turn? I would suggest visiting the MIT Open Courseware website, a wonderful (and completely free!) site containing resources such as lecture notes, exams, and videos from MIT courses. (Skip the tuition and watch the lectures for free? Yes I will, thank you very much!) The resources available through the site vary by course, but there are icons at the top of each course site to tell you what’s there. The site is by no means limited to science courses, although within that subject, visitors will find resources pertaining to biology, brain and cognitive sciences, chemistry, earth/atmospheric/planetary sciences, mathematics, and physics...certainly many lifetimes’ worth of learning!