I'm a millennial, so I guess I grew up with the internet, but wasn't something I really used myself until high school. I remember the "information superhighway" term pushed a lot in grade and middle school. My family only had dial-up until after I graduated high school, mainly because my parents were concerned I would spend too much time on the internet (they were 100% right lol). I wasn't allowed on the internet at home unless I had to do research for a school project. I ended up having a do a lot of "research" for a while.

In high school, I got my hands on a second-hand laptop, so I would take it to friends houses or wherever I could get a wifi connection and screw around on the web. I spent a lot of time on Newgrounds and AIM before Youtube was a thing. I learned how to find the .swf files in the browser cache so I could rewatch flash videos when I was offline. I also learned some things about my family while browsing the browser cache, but I'll be keeping those secrets.

I never used Napster, but did use Kazaa and similar to download music and such.

I didn't quite understand how insane it is to have access to that much knowledge until later. To me, the internet was a convenient place to do research, play games, watch funny videos, and chat with friends.