A San Francisco company called Learn the Net has produced a basic on-line tutorial about the Internet.
If you need a fundamental primer, this might be a place to look.
It is not a series of scaled down "baby talk" lessons. You can drill down though the meaning of 403/404 error codes and links to WW3 Generic URI Syntax (RFC 2396) standards.
That is if you know how to drill down.
"Throughout Learn the Net--in fact on most web pages--you will see words that are in color and often underlined. By clicking on these words, known as hypertext, you jump to other places on the page, to other pages on the site, or to other resources on the Internet."