Upon reading these books it is immediately apparent that Richard Feyman had a complete grasp of the concepts presented. His expositions are thoroughly well thought out, and extremely logical. Does that make these books great tools for learning to be a practising physicist? The answer to that question has two parts. First, to become a competent physicist one must have a clear conceptual picture of the necessary material. Second, this applies in particular to (although is not limited to) research, one must be able to use the concepts and the machinery to solve problems. These books concentrate on the first problem, having a firm grasp of the concepts fundamental to physics. It must be borne in mind that these books constitute a lecture series. Thus, they contain only the explanations offered by Feyman in his oratory, i.e. no problems sets are included with the texts. Therefore, they are at a significant disadvantage with respect to other, more complete treatments of the material, which is exacerbated by the price of the three volume set. However, when supplemented by another text(s) which provides worked examples and solved problem sets, the volumes really come into their own. Reading and digesting the contents of these three volumes will not develop all of the necessary skills required to practice physics competently, however the sheer clarity of the exposition of the concepts treated provides the student with a thorough grasp of the material from which to formulate approaches to problem solving. Ulimately though, one needs to decide whether the price of these volumes together with that of another complementary text is worth it. If you are serious about developing a deep understanding of the material, the answer is probably yes. If you just need something to get you through your exams, probably not.