All interactions are done through the command-line interface.
If you run
joomla by itself, help will be displayed showing all available commands. In addition to this, you can run
joomla command with the
-h flag to output help about that specific command.
For example, try running
joomla site:create -h. The help will output a one sentence synopsis of what the command does
as well as a list of all the options the command accepts.
In depth documentation and use cases of all Console commands by namespace: