I have got a basic understanding of proxies,I use them frequently but I want a complete understanding of proxies and everything it entails.Is there a link or a book with all that I would need to gain expert knowledge on the subject.

I search google alot looking for proxy info but I want more. :twisted:
Any help would be appreciated.

A good start would be the following:

http://www.digitalcybersoft.com/ProxyList/docs.shtml

That includes some protocol documentation at the bottom which should provide you with asmuch information as is needed for a deep analysis. There is also this if you care to take a look which I add information to when I get a chance:

http://proxy-server.info/proxy-server-guide.shtml