I think (if I remember rightly) my first ever was one of these
Amstrad PC1512, monochrome display, bought for £200 off my brother-in-law, who wrote for a magazine, in those days. I think it must have been about 1991 when I got it.
I wrote a couple of essays on it, and god knows what else I did with it....certainly not £200-worth of use!!... I'm not a gamer at all, so didn't experiment with anything like that.
I didn't fully become a 'convert' to using computers fruitfully till I got a 'proper' Windows PC* with more memory (a huge 1MB hard disk and 4MB RAM) and a mouse. Once I'd worked out the basics of using word and powerpoint, I was off. The internet was (and continues to be) a positive revelation to me.
*(yes, yes, get a mac, I know...

)