How comes Giorno conveniently “reads” about things?

While I was rewatching part 5 I noticed that in the Grateful Dead fight and the Green Day he read about womens body temperature’s and the type of mild that kills insects when they get lower. I understand that he’s a student but does this mean he studies biology to understand his abilities? If so where can he develop further with this and how useful would it be to figure out something more complex like the green baby Pucci made form Dio’s bone? Or even whatever the fuck Joshu is.