Played around with my dad's 386 running Windows 3.0 (or was it 2.x?). Some IBM machine.
I attended a computer academy learning GWBasic, DOS, word processing, spreadsheet, etc. on a 286, 386SX and sometimes with the new, top-of-the-line 486's. I think those had 2 or 4MB of RAM.
My official (as in my computer) computer history:
1) AST-brand 486DX2-50 w/4MB RAM (later upgraded to 12MB)
Started to build my own machines:
2) P166MMX w/64MB SDRAM (PC66)
3) Dual Celeron 433 (ABit BP6) w/256MB SDRAM (PC100)
4) My friend gave me his Aptiva P166 w/96MB EDO RAM - I play around with it running NT4
5) Duron 800 (Gigabyte 7ZX) w/256MB SDRAM (from the BP6) - currently my server
6) Athlon 1 GHz (MSI K7T Pro2-A) w/256MB SDRAM (PC133 Crucial) - currently my workstation