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Title: Demystify what?
Review: It does NOT demystify anything for me. It introduces new notation, new concepts and DOES NOT explain them. eg, it introduces the Derivative in 1 line without any explanation - somehow Lim x-> 0 (f(c+h)-f(c))/h relates to f(x)=x^2+x because in 2 lines it shows that because a limit can be calculated for the former at a value means that a derivative of the latter can be found with the same value. Sorry, not demystified here - how does the former even relate to the latter? An explanation of that would demystify.
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