The Hard Thing About Hard Things - Ben Horowitz
Wow this book earns a straight 10 on the Z scale of awesome. Caveats would be: it's very American & focused on larger / later stage start ups. Horowitz stands out by talking about the un-sexy parts of business, like firing people and messing up. It's refreshing to learn from someone's mistakes, rather than having to listen to them blow their own propaganda trumpet. There is far too much interesting material in here for me to go through in a blog, you really should just read i