Installing Elastic Cloud Enterprise Offline

There are too many documents! Can someone reply with the correct guides for installing Elastic Cloud Enterprise offline on a Linux box?

What have you tried?

You need to follow the documentation, there is not much else to go.

You can start here.

Which documentation is my question. I am looking to do self-managed offline so the link provided will not work.

Oh I see.

Did you check on the ECE documentation page?

You will need first to prepare your hosts then follow the instructions for the offline install.