Your basic course in grid work. Though I will probably be dragged outside and beaten, I have to say that this book is not the bees’ knees. While it is an incredibly worthwhile book in grid systems, there are many more, newer volumes that are, I dare say, easier to digest. Many designers find this book to be the end-all-be-all, most of that is due praise because Müller-Brockmann was pretty much the first guy to synthesize this information. All I am saying is every designer should read at least one grid design book, and this is the daddy of them, but do some research, you may find one that works better for you (even if they are just presenting the same information a little differently).