First was DBZ, They used to play it in the mornings to keep the kids happy before we all went to school.
Then i went to the video shop (This is when people still used them) and rented a few DBZ series DVDS. Since i was only a kid back then i had no idea of the story line and didn't even watch them in chronological order. They only had the buu saga and there was a different dvd there every week. Still i watched it.
When i was about 14 i downloaded the full series and watched it from start to finish.