I'm 19, aspiring to go into professional physics, most probably in the astrophysics branch. I'm mostly attracted to gravity (please do not mind the pun), quantum mechanics, string theory, the remote possibility of FTL travel using Alcubierre Drives (or better technology, someday), fusion, et al. Graduated from high school in 2013, had a gap year due to a few bad decisions about college. International student. Indian. I've been accepted into UMass Amherst, and unless some REALLY good offer comes my way by April 4/5th, I'll enroll myself. To compensate for my wasted year, I took a bit of an initiative, and did the following: MIT OCW: 1. 8.01 Classical Mech. 2. 8.02 EM. 3. 18.01 Single Variable Calculus. 4. 18.02 Multivariable Calculus. 5. 18.03 Ordinary Differential Equations. Now, for advice: 1. What are the usual Freshman year GenEds? 2. How many credits can I safely take while maintaining a 3.9+ GPA? I realize this is a somewhat vague question, but I'd appreciate any answer, even if it doesn't directly answer the question itself. 3. I still have 4 months till I leave for college. Is there anything I can do, any texts I can study, anything at all, that I can do to prepare me for Freshman year so that when I do reach college, regular revision is all I need to do for an year? 4. Is there an online repository of problem sets for introductory physics courses which I can plough through? Or something a bit more challenging? 5. Any other general advice that would be useful to me? I realize that some of these questions may have been answered generically in other threads. I read the pinned threads. I do lurk around the forums and read the threads quite a bit. A preemptive thank you to anyone who is going to reply to this thread.