if you can do both differential and integral calculus--and have some background in mechanics---I highly recommend the following book listed below---trust me it's a light book in terms of the mathematics of aerodynamics
--but it give a lot of the true basis of section lift-though geometric 2D airfoil analysis---as well several--
{hundered} or so pages of data on various NACA airfoils---very good for beginning aero--injunirs and such
Ira H. Abbott and Albert Von Doenhoff ---Theory of Wing Sections [1959]
PA