Hi GTIM

First you need choose the pike release and the user guides will appears.

If you are in the Netwon or Ocata release, the following message appears:

"The central user guides managed by the OpenStack Documentation team were deprecated and removed during the Pike release cycle. The content was moved to the individual project documentation trees . Because of the timing of that change, there is no separate Ocata version of the user guides. Please refer either to the version of the guides created for Pike, or the most recent series in development, instead."

https://releases.openstack.org/newton...

Installation guide - https://docs.openstack.org/newton/ins...