I gave this 5 stars because I think it is about as complete as anyone could want, unless they were looking for a source on high powered rocketry(the author has a different book for that). We don't, at this stage, plan on doing 80% of what is in this book, but it was still a great resource for tips for building a rocket, even if you are using a kit, and doing fun stuff like sticking a camera in it, or measuring the height it flies.