The first two editions of Teach Yourself C were Osborne best-sellers, together selling over 100,000 copes. Teach Yourself C, uses a proven mastery learning approach to one of the most difficult languages to learn. The book is structured in such a way that it provides objectives, followed by minimal discussion, and concise examples; it tests the reader's understanding with multiple exercises (answers provided in the back of the book). The book first tests understanding of individual concepts and then tests understanding of a given topic in a larger setting. If the reader goes through this process, he/she will gain mastery of the fundamentals of the C language. Some readers will pick up concepts by simply reading the sections and occasionally pouring over examples; others will closely study all examples. Some will try the exercises. Others will learn by reading through the answer section and some will do all of the exercises. The reader is given different options to learn the material, and thus control how they learn C.