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by j-james 1842 days ago
I highly recommend Interactive Linear Algebra for learning undergrad-level linear algebra mostly in the R^N. It has a PDF version available, but the real magic is in the interactive embedded 2D and 3D visualizations.

There's a couple of variations available - it was written by some professors at Georgia Tech, one of which moved to Duke and teaches off of it there - but the UBC version is my favorite, as it makes some changes in the lesson order to teach vectors before matrices.

https://www.math.ubc.ca/~tbjw/ila