If you liked the "functional" style of calculus in SICM, or want a calculus only book in this vein I recommend Baby Spivak: https://en.wikipedia.org/wiki/Calcul

If you liked the "functional" style of calculus in SICM, or want a calculus only book in this vein I recommend Baby Spivak: https://en.wikipedia.org/wiki/Calculus_on_Manifolds_(book) https://en.wikipedia.org/wiki/Calculus_on_Manifolds_(book) (And obviously Functional Differential Geometry by the authors of SICM)