Open Education Resources (IUPUI)

MIT Open Courseware offers an extensive series of online philosophy courses. Courses generally include lecture videos, assignments, exams, and more.

These courses provide syllabi and video lectures on a variety of topics.

HathiTrust offers a collection of millions of titles digitized from libraries around the world, including many of the great philosophy texts.

Authored by Dr. Paul Teller at UC Davis, Volume I presents sentence logic. Volume II, Part 1 lays out predicate logic; Part 2 introduces metatheory.

Project Gutenberg offers thousands of free ebooks. Books can be searched by title or by category.

TED Talks are short videos on a variety of current topics and controversies.

Short and long videos of a variety of lecturers and philosophers.