The author, Clinton Wong, does an great job of covering HTTP. He points out the differences between HTTP 1.0 and HTTP 1.1 in an excellent manner. This books covers the following topics: What is HTTP? -- HTTP Transactions -- Client Methods -- Server Response Codes -- Headers -- URL Encoding -- Client and Server Identification -- Referring Documents -- Retrieving Content -- Media Types -- Cookies -- Authorization -- Persistent Connections -- Client Caching This is a SMALL book. "HTTP Pamphlet" would be a better description. As a "Pocket Reference", trust me, it will definitely fit in your pocket. However, the Hypertext Transfer Protocol (HTTP) probably doesn't need more than the 75 pages it is given (after all, it is a pocket reference). I'm not sure the (price) cover price is right. There are best selling noves 5 times this size that only cost (price). However, technical books, especially computer/programming/networking ones always seem to cost more.