I can't believe you said "Fortran"
The first computer programming class I ever took was in Fortran Watfiv G which ran on an IBM 360 at the University I attended..never could get the hang of it, but it was an experience running your stack of cards through the reader at midnight (only time you could get decent turn-around time) only to find out your "program" didn't make it through the compiler (or some such thing) and you had to try and debug it at 1:00 AM..the good old days?