All of their albums are awesome and I enjoy them all but if I had to chose one to start off with I would say Legacy of Kings. Awesome album with some great very heavy tracks including one of my favorites "Let The Hammer Fall". Also check out their lead singers new solo album. He goes by the name Cans and the album is called Beyond The Gates. It doesn't quite sound like Hammerfall but darker and even heavier. Features Mat Sinner from Primal Fear and Sinner and Metal Mike formerly of Halford now of Painmuseum on guitars.