Congrats! Don't worry about not being a programmer, this is how we learn.

TCPSend seems to be what you're looking for, use it the same way as in the initial example. The only real question is when you use it. If you only want to serve up the same document every time someone connects, you can probably get away with just sending it unconditionally when someone connects. Otherwise, you'll need to receive some data, look at it, and choose what to send based on what you received.