The first album I ever bought was by Black Sabbath and it just launched me into BOC, Montrose, Mohagany Rush, Robin Trower, Scorpions, UFO, Van Halen, and most of the classic hard rock of the 70s (not sure when it started being called "heavy metal."
In the 80s, I moved to Metallica, Megadeth, Metal Church, and many of the metal hair bands.
In the 90s, I found Dream Theater, Rob Zombie, Porcupine Tree, and Linkin Park.
Now I've found Arch Enemy and Arise and Ruin.
Never cared much for Godsmack.