Problem scenario: You want to troubleshoot a variety of issues with Puppet. You go to Puppet's page for "Troubleshooting Common Errors." It says that a "A newer version is available; see the version menu above for details."
But every link newer than Version 2.8 you try gives you this "We tried to find that page, but 404."
Google the error itself. If there is no error and it is a Puppet manifest that is not working properly, try this link. Other useful links outside of the manifest not working include this one from Puppet and this one from Upguard.