I want to install Adelie on my Desktop, intel pentiumD bios

After the live CD boots and we log into zsh shell, what next?

After login as root, how to run the installer?

Tried to explore the live CD by logging in as live. Just drops into zsh. What next?

Documentation is non-existent for live CD

It says refer /usr/share/doc/handbook

There is no handbook in /usr/share/doc