I unfortunately also started out with pop, before discovering a few hidden gems like Manic Street Preachers and Blur.
I then moved onto Nu-Metal and later onto classic rock and heavy metal. Bands like Iron Maiden, Metallica, AC/DC and Kiss got non-stop airplay on my CD player.
I then diverted more towards indie rock (Franz Ferdinand, Arctic Monkeys etc).
Then my taste spread out even more by the time I was 17, with various heavy metal genres covered, along with indie too oddly enough.
As I went to uni and grew up, I came into contact with a lot more. Including folk-rock, blue, progressive-rock, Britpop etc.
And I'm still discovering new stuff up to this moment, and shall not plan on stopping any time soon.