The first "proper", programmable, computer I ever used was a Sharp computer/calculator that had a dot-matrix LCD screen that had room for one line of text with about 30 characters or so (although it could also be programmed to address each pixel on the display individually, allowing for very limited graphics). Total RAM would have a been a few kilobytes. This was also my introduction to programming (in BASIC).
Around the same time, I got my first games console: an Atari 2600. Prior to that, I played some early Pong-like games on friends' primitive consoles.
The first PC I owned was an Atari 800, purchased second-hand in the early 1980s. What was great is that it also came with a whole bunch of manuals and books on programming, in BASIC and Assembly. I typed in a lot of listings for various bits of software (mostly games) from magazines, and also did a lot of programming myself. I was in a club (a Users group) for a few years. The Atari 800 had a whopping 64KB of RAM, although only 48KB was usable for programs. I wrote several programs that exceeded the limits of the available memory. Initially, the only storage medium I had for the Atari was a cassette "drive" that used ordinary audio cassettes as the storage medium. Later on, I picked up a second-hand floppy drive, which was my first exposure to disk media.
Early 1990s, got my first IBM PC which, frankly, was a step down in a lot of ways from the Atari. But they got better once the "clones" started to dominate the market. 5 1/2 inch floppies were gradually replaced with 3 inch "floppies". At some point, I gained a hard drive. Total RAM on the early IBMs was about 640 KB, IIRC. Later came CD drives, then DVD drives, then USB memory sticks.
I didn't do very much online in the days of dial-in connections using regular (analogue) landlines, but I remember playing around with 300 baud acoustic modems, later upgraded to the astonishing speed of 1200 baud (bps).
I first saw a GUI at university, which purchased some early Macintoshes to supplement the existing (aging) mainframes (which had classic green-screen monochrome terminals). Learned how to program properly at university.
First used a web browser (Mosaic, then Netscape) in 1995.
Discovered sciforums in 2001 and joined as a member. This place - like many internet sites - was the Wild West back then.