Massachusetts Institute of Technology: Introduction to Aerodynamics, delivered for free at edX: https://www.edx.org/learn/math/massachusetts-institute-of-technology-flight-vehicle-aerodynamics
This is introductory, but pretty comprehensive course of aerodynamics taught in the context of airplane flight. Prerequisites include: "basic physics, vector calculus, and differential equations, at a level commonly taught in first-year university subjects in physics, calculus, and differential equations"