Hi Guys, I'm going to start my undergraduate degree in Astrophysics at Columbia University this Fall. From the various conversations I have with professional Astrophysicists, it seems like i have to know computer programming on top of astrophysics, if i want to work in the field. I have ZERO to VERY, VERY LITTLE experience in computer programming ( honestly, I did some MS-DOS and LOTUS 123 in the 90s, but I've completely forgotten how by now ! ). What courses / computer programs should I learn. Which ones are applicable for Astrophysics/Physics ?