The Quickstart documentation is fine as a 'get you going' document. However, I went to Settings->Configure Kdenlive and, at the bottom of the dialog there is a 'Help' button. Clicking that help button takes you to the Quickstart - which is not appropriate to that dialog (and I suspect many other situations). A more complete document would be good.
Yes you have to click either on "Kdenlive/Manual/QuickStart" and then on "1.5 Complete manual" and then on the "full manual" or on "Complete manual" and then on the "full manual" to get there.
*** Bug 425921 has been marked as a duplicate of this bug. ***
With the latest Kdenlive version hitting F1 we direct to the new documentation. All documentation links are pointing now to the new documentation. I close this bug. If it still appears in the latest version, please feel free to re-open it and update the affected version number