Good old metallica should do the trick.

Try songs like Fade to black, Orion, Call of Ktullu, About every song from the black album too. They have some harder song but in general their stuff is not so hard. Like anything else, it takes practice. Tehy always have at least one easy riff per song, take your pick.

I'm from the generation that actually bought the tab books! You should be able to find them on the net anyway but buying those books is a good investment, I learned a lot with them. I recommmend Ride the lightning and the black album for beginners.