When I was very young I knew nothing about Formula 1. I hadn't encountered it yet. So my earliest memories of watching grands prix are from when I was aged around six or so, around the time my dad bought me my first kart. He was a huge fan of Alain Prost.
At that stage in your life you're still learning a lot about the world, but I'd say the 1986 F1 season was the first I remember watching: the red-and-white McLarens were striking, and usually running near the front.
The championship went down to the last race, but I remember that earlier in the year at the German Grand Prix, Alain had to try to push the car across the finishing line after running out of fuel on the last lap. And he was classified sixth! That's how it was in those days. There were a couple of teams that were so far ahead that you could run out of fuel, get out and push, and still come away with a points finish.