I'll be teaching an undergraduate course out of this text next semester. Sections are short, with a few exercises after each one. Proofs are included. Wide selection of basic selected topics in information theory, coding theory (including Huffman codes as well as some error-correcting codes such as Hamming codes), and cryptography. This book is useful for someone who is interested in those topics and wants to have a carefully written but basic introduction. In my opinion, Biggs is a terrific writer, the same one who wrote the Discrete Mathematics book published by Oxford Univ Press.