I first got onto the internet in 1995 with an email address on (now defunct) sid.net, which was actually a popular BBS here in the Atlanta area. I FTP'd some files, etc, from URLs out of a book on virtual reality. And I did this using my Commodore 64(!) using an 80-column "emulated" terminal and 1200bps modem :-)
First directly on the internet experience was a UNIX shell account on some university machine (some freenet), which I accessed from my high school.
Ah, memories...