I'm majoring in CS and applied math, but I have almost no CS experience. I never took a computer class or AP CS in high school. I have that the intro level CS course involves learning python, but all of the reviews for the class talk about how there's a huge knowledge gap between kids who have done it before, and kids who haven't. They talk about how it seems nearly impossible to catch up. Any advice on how/how much I can/should prep for it this summer?