Let's say that we want to improve the first page and have the name of the document and of the author in some place and the reference to the website at another place.
Going back to the previous document we've made, reduce the size of the frame so that only the first two lines are visible. A little crossed square is displayed near the bottom right corner of the frame to indicate that there is more text inside the frame that can't be displayed: we call it "text overflow".
Draw another Text Frame (T) next to the bottom margin and take the Select Item tool (C) and select the first frame.
Take the second frame and click on it. You will see that the text will continue from the first to the second (if not, make the second bigger until you see some text in it) and that the text overflow indicator is now on the second frame.
You've got it if you want the text to continue in other pages; just add frames to them and link them in the same way...