Lifelong learning has been boosted in the last few years with the growth of free online courses called Massive Open Online Courses or MOOCs. MOOCs are often produced by universities, or subject experts and range in length from a couple classes to a full semester of material. Most classes are free of charge, but there may be fees to obtain certificates or additional features. There are several large MOOC platforms, where you can search for classes by subject area or institution, you can also try searching the web for platforms in specialized areas of study. User accounts are required.