My first computer was a TI-99/4A which I bought on the disastrous assumption that Texas Instruments was BOUND to make a good system. It wasn't really all that bad for the time, but it wasn't very good either. I used a casette recorder to store my programs and it did hook up to my TV (unlike the original TI-99/4). It was fun to play with, but the few programs you could purchase on atari-like firmware cartridges were overpriced and not much fun to play with. Fortunately, I was in Beligum at the time and was able to buy a British tech magazine called "Home Computing Weekly" which published programs for several of the platforms of the day that you could type into your computer and play with. By analyzing the programs, I learned a lot about the art. I also got some nifty games to play in the bargain.
I took my first BASIC programming course on the TRS-80. THe second one was on an Apple 2E. I also owned a VIC-20, an Osbourne-1 portable (oh, my aching shoulders) and a cutesy little Timex-Sinclair tha hooked up to my TV. Remember Wordstar, Visicalc and the operating system CPM? And like many, I owned a Tandy 1000.
The silly thing is, sometimes I miss them all.