I want to study geometric algebra in my spare time, and I have found many resources about it already. These resources range from books, to notes and articles. However its very difficult to find an actual course on this subject (including lectures and exercises).

Opencourseware has some material online on this subject, but most are not exactly what Im looking for and all of them are incomplete. Other sites such as coursera and edx only have entry level math courses.

I could not find any useful questions on math.stackexchange. Several topics on mathoverflow give references for this subject, but I think some extra materials would help me master the subject. If anybody has any good sources for such content it would help me very much. Thanks!

geometric algebra, you might mean the approach to classical mechanics and linear algebra due to David Hestenes, using Clifford algebras. Hestenes's approach is not covered in any of the sources you have listed, but it is the interpretation that Shuchang Zhang took of your question. Maybe you could clarify what you mean by ``geometric algebra''. Do you mean something like Emil Artin meant: algebra with an emphasis on geometric intuition and group actions? $\endgroup$1more comment