Hi,

For this if you like to manual installation, follow these steps explained here: https://computingforgeeks.com/how-to-install-odoo-on-ubuntu-linux/

Also there is installation scrypt available for the same, in which the odoo can be get installed in few clicks, see this installation script: https://github.com/Yenthe666/InstallScript

For Video tutorials: https://www.youtube.com/watch?v=CYESvjWR-y4

Thanks