The first computer I used was a Apple IIe in the 7th grade ... what a nice piece of work that was.
The first computer I owned however was a Coleco Adam. I loved that computer, and for the price it was great, except for one little quirk it had. It came with a tape drive, and if you were programming in BASIC, you couldn't leave the tape in when you shut it off or the tape would be useless. I did it by accident about 3 times before I wised up. the daisy wheel printer was nice too. I still remember the first thing I did with it when I unpacked it ... made a character sheet for D&D (c: I broke it out in '92 and it still worked fine.
The first computer I put together was a Heathkit Motorola microprocessor that I had to program in hex. I did that in high school ... I went to a vocational school and was in electronics. Great memories from that time, one whole week of shop every other week. It wasn't long before we built some Heathkit Hero robots and programmed speech in hex ... we had a little warning system hooked up to an external speaker in the ceiling of the bathroom down the hall to warn us smokers when the dean of students was coming. We had a good vantage point and had light sensors and a camera mounted in the hall (we said it was for open house) ... the dean never did catch any of us, and our teachers (both smokers) were very supportive.
After that it was a ton of Amiga's ... the last one I bought was in '95 or so, a unit from England I believe, with a Toaster 4000 and Anilam editing system. Lots of PC's too, I'm a vender at the M.I.T. flea market and usually come home with more than I brought ... I'm not even sure how many computers I have right now. Hooked up and running I got 4 on my LAN and 2 laptops. Ya gotta love it!