I’ve found https://betterexplained.com https://betterexplained.com an excellent resource for developing an intuition for fundamental concepts in math. For calc

I’ve found https://betterexplained.com https://betterexplained.com an excellent resource for developing an intuition for fundamental concepts in math. For calculus itself, I’d recommend Thompson’s enlightening and witty 1910 textbook “Calculus Made Easy”. It’s available for free at: https://www.gutenberg.org/files/33283/33283-pdf.pdf https://www.gutenberg.org/files/33283/33283-pdf.pdf