I was a late developer... when it came to decent music. The first album I owned was by Europe in 1986, the first I bought was Thriller in 1987. Even when I got my first CD player at the age of about 14, I was in to dodgy commercial dance and pop. I didn't have a clue.
Luckily, my sister fixed me. I'd already developed an obsession with REM around late 1993, listening to nothing else but their first seven albums for about a year before getting ridiculously excited about Automatic for the People. Our Karen developed that obsession and tried her best to make it the basis for the development of taste. She told me about Nirvana - I'd go on to learn the entire Unplugged album on that acoustic guitar I'd just learned to play.