Documentation Validating/Verifying before installing
https://www.torproject.org/docs/installguide.html.en sorts "Install on [x]", "Install on [y]" (...) and then "Verify our GPG signatures"
Wouldn't it be better to start with explaining verifying before explaining how to install? Especially for some people it is very important to check the installer before they install. (One should always do, but not anyones personal security is in danger, when you don't check the installer)