Okay, ive always been confused about the crazy huge amount of Metal genres, sub genres and the like. so here is a list of the genres, an explanation of what each is, and a few bands that are in the genre.
[edit] Black metal
Main article: Black metal
Black metal is an extreme subgenre of heavy metal. It is typically abrasive and usually makes use of fast tempos, high-pitched electric guitars often played with tremolo picking, high-pitched shrieking vocals, and unconventional song structures. Lyrics often focus on anti-Christian themes, and during the early 1990s, the Norwegian black metal scene was associated with a wave of church burnings.