After you’ve had a chance to learn single-variable calculus and introductory linear algebra, I highly recommend two books for “second courses” in these areas:

After you’ve had a chance to learn single-variable calculus and introductory linear algebra, I highly recommend two books for “second courses” in these areas: 1. “Vector Calculus” by Baxandall and Liebeck is excellent. Begins with a semi-formal review of single variable calculus before going onto a mix of linear algebra and multi variable calculus. 2. “Linear Algebra Done Right” by Axler is one of my favorite books in any field. Might be challenging to people completely new to proofs or linear algebra but starts with pretty simple foundations and builds up an excellent rigorous foundation. I enjoyed this way more than other intro LA books but needed to study more applied LA first to be able to read this. Another approach is to start with abstract algebra and then go into the Axler. I self-studied both of these texts many years after college and had forgotten pretty much all my math except some high school stuff. Supplemented by YouTube videos, Khan Academy, I felt pretty confident and eventuallY fell in love with both of these texts.