I purchased this item for the summer to continue practicing design while working on my thesis and I've found this book really good. Not only do you have exercises but for each section (e.g. branding, online design, packaging), they give you good information on the design process, on different applications, etc.
Then, there are several exercises within each section, starting with an easy one that would consists in making stationery with a given logo, for instance. Then, there are more difficult ones consisting in developing an identity (e.g. logo design, colour scheme, etc). What I find great is that there are solutions for each exercise to illustrate how you could have proceeded. It's good to be able to compare your solution with other options, as it gives more ideas for future practice!
I have only studied graphic design for a year, so I feel this book is a great opportunity to practice. It might be too easy for young graphic designers who've gone through a BA in graphic design. But, I find practicing on different types of briefs for "clients" from different industries makes the exercises quite realistic and is also a good way to explore sectors I would not necessarily have looked into. Indeed, so far, I was training only on areas of interest (e.g. restaurant industry, arts, etc) and now I try and design stuff for hair dressers, lawyers, organic food, etc. So it's quite valuable, I find!