The URLs to the source and PDF output for the three LilyPond tutorials are broken. Users cannot follow the tutorial, and it is therefore useless. This is (hopefully) easy to fix, and it must be done by Fedora 15.
Further exploration reveals that all links to tutorial files are broken. I wonder whether this should be fixed in the current release?
A correction has been posted in the proposed solution to Bug 654187. We cannot test this until the Fedora 15 final guide is published.