Found in 3 comments on Hacker News
colanderman · 2011-09-13 · Original thread
Strang has another great book, Linear Algebra and its Applications: Everything I know about linear algebra I learned from this book.
jimbokun · 2009-11-21 · Original thread
The Strang book is pretty much indispensable, I think.

The course lectures are online, too.

I've been taking courses related to Machine Learning, and never having taken a Linear Algebra course, I find myself going to this text and watching these lectures a lot to bring myself up to speed.

kqr2 · 2008-11-02 · Original thread
My favorite text on Linear Algebra is Gilbert Strang's Linear Algebra and Its Applications although the current edition is ridiculously expensive:

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