It's the golden age of the autodidact.

An increasing number of universities are making course materials available online for free. The materials can't be used for course credit, but they are available for one's personal enlightenment and enrichment. Two institutions where I gained some higher learning offer online course material.

First, there's the MIT OpenCourseware program.

For example, the Urban Studies and Planning department offers materials from well over 50 undergraduate and graduate courses, with syllabi, reading lists, lecture notes, and assignments. Their introductory course, 11.001J, looks like an excellent, well, introduction, to the history, terminology, and trends of urban planning.

The Electrical Engineering and Computer Science department offers everything I took in my undergraduate program, including the four foundational courses taken by all Course VI undergrads (Structure and Interpretation of Computer Programs, Circuits and Electronics, Signals and Systems, Computation Structures); Artificial Intelligence; Automata, Computability, and Complexity. They even have Strobe Lab, including the required lab experiments (student must supply own stroboscope, rifle, ammunition, and target objects).

Back in the early '90s, our church offered extension courses from Covenant Theological Seminary, and I took about a half-dozen until our church dropped out of the program. Covenant, in St. Louis, was founded in 1956 as the seminary of the Evangelical Presbyterian Church (EPC), a denomination which, through a couple of mergers, became part of the Presbyterian Church in America (PCA), which denomination the seminary now serves. (There's a newer EPC, founded in the 1980s, which has no connection with the earlier denomination.)

Anyway, Covenant Worldwide offers materials from the 20 courses that would constitute the Master of Arts in Theological Studies program if you were taking the courses on campus. For each course there is lecture audio in MP3 format, plus lecture notes in PDF format, and a list of recommended reading materials.

I can highly recommend Ancient and Medieval Church History and Reformation and Modern Church History, both taught by Prof. David Calhoun. One of my fond memories about his lectures is that he always began with a prayer written in the age he is covering in the lecture.

The Francis Schaeffer course is interesting, too -- not only because it's about the background, life, and work of the renowned evangelical writer, but because the milestones of his life were the milestones that shaped modern evangelicalism, from the fundamentalist/modernist controversy in the '20s, through the break between separation-minded fundamentalists and evangelicals in the '50s, to the beginnings of Christian political activism in the late '70s.

I've never heard his lectures on theology, but Robert Peterson served as pulpit supply at our church during two periods when we were between pastors, and he's a wonderful teacher. His course, Humanity, Christ, and Redemption is online.

Many thanks to TulipGirl for the tip.