It's interesting you mention QM and Plasmas, mainly because they are about as far apart as two subfields of physics can be.
That said, the recommended books are good but may be a bit above your current level. Pick up a book on vector calculus ( http://www.wwnorton.com/college/titles/math/div3/
) and then an e/m book if you want to go further into plasmas. From there you'll be suited to tackle the listed books.