Depending on what is to be understood by "internet session", I'd have a few possibilities.
Early 90s I've been active a bit on some Usenet groups, on comp.sys.amiga.____ amongst others. My first true E-mail adress (venco@foxhunt.xs4all.nl) was via a Dutch BBS, around 1993/1994 I believe. My first steps on the WWW must have been around mid-1995, when I went to college and they had a lot of PC's connected to the Internet.
I can't really remember if I first saw the WWW at uni or on my Amiga though.
