Don't Know Much About Friedrich Nietzsche

This is definitely not for everyone, but if you're so inclined, try Jonathan Ree's concise introduction to Nietzsche by way of book review.  Ree doesn't much care for the two recent books on Nietzsche by Julian Young, who, he argues, trys a bit too hard to domesticate the mad German professor/philosopher.  But as you read Ree flesh that out, you'll come away from the review with a pretty good introduction to Nietszche's life and thought.

Not to mention, it's darned good writing.  I particularly liked this sentence: "If an argument looks rough and murky, it may be best to leave it that way, and interpreters who buff it up till they can see their faces in it may be doing their author a disservice."