If you are a student using this book to learn introductory physics, please note that this is a lecture note style book organized to support top-down learning. That is, it presents summaries and support material first and detail second, both in the chapter layout of the book itself and in each chapter in turn. Each chapter ends up with a set of examples followed by problems that most students (including very advanced ones and in some cases even the graduate assistants helping to teach the course) will find quite challenging.
Unlike many textbooks that present far more material than you could study and still be able to attend social engagements, sports events, the theater, and ``have a life'' at college, this textbook will clearly indicate the ``key'' problems - the ones you must fully understand in detail to have a hope of being able to solve problems on exams or quizzes. It also provides octave/matlab scripts that you can ``play'' with and use to improve your visualization skills and conceptual understanding on the one hand, and can also use to explore problems that are easy enough to formulate a solution to using what you learn but where the resulting equations cannot be solved analytically. In this way you can explore things like nonlinear systems (ones with damping and driving forces) that lead to some very interesting behavior usually omitted from intro physics courses.
To take maximal advantage of this and get the most learning out of the least work, you should proceed in the following way:
I cannot emphasize how important this is. Hands-on work involving both halves of your brain (which includes doing lots of homework problems, running and playing with the octave/matlab scripts, and participating in ``lab'' activities) is the only way you will actually learn this material. Physics is not something that you can reduce to a large set of equations and memorize. It is something that is reduced to a small set of equations, definitions, and relations that you learn deeply to where you can derive solutions to all sorts of problems completely understanding what is going on both intuitively and algebraically at each step.
If you are a typical student, this is nothing like anything you've ever done before, and when you learn how to do it in physics you will be smarter and more capable of solving problems in any field or domain than you were. This is the (often overlooked) reason to really study physics, not because you might ever need some particular concept from chapter seven in twelve years when you are a Doctor, a Lawyer, an Engineer, or for that matter an Author, a Businessperson, a Musician.