Sherlock Holmes, Terry Pratchett, Game of Thrones or another Black Sabbath biography?

I don't think I've read the original adult versions of any of the Holmes stories, nor have I read any of the Song of Ice and Fire yet. I'm up to the third Discworld book at the moment. I'd read others randomly in the past but I've decided to slowly work through them in order now. The next Sabbath biog I've got to read is the one generally considered the most authoritative and best.

Keeping t light since my new job is mainly reading and reviewing academic paprers all day.

I've just finished The Secret Footballer. Not as scandalous and secret revealing as he might think, life is much like youd imagine, but its entertaining enough finding out what it feels to live it.