best book for HTTP.well designed,includes all topics and very easy to follow.If you want to master HTTP..here is the best book.

If you want to buy a book for HTTP, this must be your first book.

The gradual build up and the right level of content will never let you loose interest till the end.

Such well written books are kind of rare (like Martin Fowlers book NoSQL Distilled which is also a very well written book)