Look up at the top of your browser. It shows the address of the page you are currently viewing. This one should say something like "www.blah.com/blah/ideal/hint.html." Now, if you take off the last piece, the "hint.html," or whatever may be there, you'll find yourself in the directory for the folder "ideal." From there, you should be able to chose any node you like, completely free of authorial influence.
Or you could use the back button on your browser.
Or you could follow one of the other links in the section.
Good. Go try again.