@stefano
I don't remember many details; I had lost my family in an accident less than a year before, and my brother, who always told me how to get around, wasn't there to help me. I walked around the block of the Rectorate twice until I found the place to submit my registration and documents :) I went through the procedure mechanically, choosing 5 courses: physics, calculus, chemistry, language, and the optional course was Fortran. I left relieved and in a hurry: I want to go back home.