This tune is written in a hard rock/ heavy metal style. Whilst most tunes in this style are written in 4/4, this tune is written in 3/4 something that gives it a really unique vibe. 3/4 is a really common time signature (other than standard 4/4 time, it’s one of, if not THE most frequently used time signatures in western popular music), so getting to grips with it will certainly stand you in good stead.