IS is a very important topic nowadays, this book summarizes a huge deal of information and facts about IT, most of its contents are well known to everyone, but many topics are brand new to me. So I can say I learned new lessons from this book and it can be used as a reference. Also, the case studies are not bad.
It's a very nice book about business especially for beginners, but it's trivial for computer science students in the technical sides. I think that it's a good choice for anyone who doesn't study computer science and wants to start his own software or hardware startup.