Learning stuff can be done on your own any time. The best use of your
time in college is to cultivate professional contacts. Keep an eye out
for professors who appear to be in charge of research projects with
outside funding and volunteer to help out by doing whatever nobody
wants to do, even if it's unpaid and even if it cuts into your study
time. Be the first person that comes to mind when the professor's high
flying industry friends tell him they wish they could find some bright
highly motivated intern. If you don't think you need to try this hard
this soon to find a job I hope you're independently wealthy.
Have a well rounded college experience. Make friends, join clubs, do extra-curriculars, etc. Your ability to socialize and work in groups is as equal, if not more important, to your career success as your coding skills.