If you want to start with university, I would either make a family with a teenager, choose a like pre-made household to play, or use the CAS stories to make a sim. You get a better start at university, as in what degrees you get accepted into and which scholarships you can earn, based off of having some skills when you apply. I played with the goth family when I first played with university and it was fun to write the background for Cassandra of her being musically talented but also interested in esports and programming, so she had to choose a focus.