I've been catching up with things I've missed, already forgot or never learned in school with Paul's Online Notes: http://tutorial.math.lamar.edu/ http://tutori

I've been catching up with things I've missed, already forgot or never learned in school with Paul's Online Notes: http://tutorial.math.lamar.edu/ http://tutorial.math.lamar.edu/ It's an incredible resource with great introductions to each topic and examples that are easy to follow and try for yourself.