This is an excellent starting point for anyone who wants to learn more about the internet, networking and some of the underlying hardware architecture and software theories. A non-technical book, designed to give readers a general understanding. If you're new, unexperienced and feel a little intimidated, don't worry. Mr. Comer will guide you step by step and soon you will become familiar with some of the technologies used today. LAN/WAN? ATM? DNS? Switches? Routers? OC? TCP/IP? ICMP? FTP? SNMP? You will be able to define all of these and know what they are used for. Although remember, theory only! Mid-level networking professionals may gain a little knowledge by skimming through the book, but experience users will probably find this book a bore. This book is catered toward the novice, and it's a good one at that. A nice piece of work.