First computer, C64, mostly games and a little bit of art-type stuff, 1985ish-1990ish
Second, Apple IIe, mostly games and some word processing for school, 1990ish-1993
Third, Leading Edge 8086, Prodigy, found BBSes, didn't do much else with it, 1993-1994
Fourth, Packard Bell 486, AOL (pre-www,) BBSes, games, schoolwork, and probably my first direct internet connection, 1994-1995