Gilbert Strang's Linear Algebra textbook is designed to be useful to the self-learner, and I think the latest edition was revised after MIT's OCW was a thing, s

Gilbert Strang's Linear Algebra textbook is designed to be useful to the self-learner, and I think the latest edition was revised after MIT's OCW was a thing, so actually references all the material online, IIRC. I've read some of it and it's quite good. His lectures are great too.