Summer of 1980, going into my senior year in high school, I mentioned I'd be taking Calculus next year to a co-worker a couple years older than I. He said he had the best book in the world on Calculus, and he loaned me his copy of Silvanus P Thompson's Calculus made easy . I thoroughly enjoyed that book, benefited from its intuitive explanations, and forever appreciated his recommendation. If I may similarly influenc…
EDIT: I'm working through Khan Academy with one of my kids...would like to find other resources as well.