Books present information in various ways. Some books have questions that you can answer yourself to teach yourself how to do things. It looks like this author

Books present information in various ways. Some books have questions that you can answer yourself to teach yourself how to do things. It looks like this author would be a fan of Learn C the Hard way by Zed Shaw. But, if you are buying a book to learn how to do something coming in with some kind of goal is more instructive than reading a book and regurgitating the answers. The author has a good idea on how to make the tutorials in a book into questions but at the end of the day you will teach yourself only what it is in the book.