Explaining how the internet works is not a 5-minute lesson!

You need to go down to your library and get a book!

You might like to try this one, specifically for small embedded processors:
http://www.8052.com/forum/read.phtml?id=38426

As it sounds like you are starting from scratch with no prior experience at all, you would probably be best off getting a ready-made starter kit and working with that. There are many cheap options - as already mentioned!