I do hope that the next time you transfer a web page, you have a lot better idea of just what happens behind the scenes.
To continue from here, I suggest you go to the Topical Core and begin reading the sections that interest you. As you go, delve into the RFCs to muddle through how things really work. And, of course, there's lot of Internet topics that aren't covered anywhere in the encyclopedia. There are now almost 2000 RFCs, of which less than 100 are represented here. Douglas Comer's Internetworking with TCP/IP is an excellent multi-volume text that covers many important points I've either ignored or glossed over.
And now, please email me to let me know you made it!