Every college student’s “free” time is different. Whether sports, work, clubs or drinking, people fill there time with what the have to do or interests them. I was lucky my work was mostly free time to further play and learn computers, OSs and software. I learned networking with PERL, Java in my free time, lots of Solaris and AIX. I didn’t spend any time on VCS, but this was back when RCS and SCCS were dominant.