I would probably be reading books from the library written in the 90s for most of my childhood (which is pretty close to what happened anyway only difference being learning the windows command line from the built in help menu) and if I assume no internet means no computer, well I would be doing my best to study space systems, genetics, or neurons (the human connectome) and I probably wouldn't get very far because in both timelines I would take a hard guess that I wouldn't be college educated, but idk with this different path, maybe I would try way harder to try to get into college and even if not really research the best libraries that are out there to study more updated information.

From that point, its hard to know where life would have taken me. I definitely feel like I wouldn't get as far in those fields as I have with what I know (being that what I do know was so greatly aided by internet access).