If you didn't, you have to download Auxtral 2 from the "Download" page in the main menu.
Copy the ISO image to a DVD or bootable USB drive.
To copy to a DVD download "Brasero" if you use Linux, or "DVD Creator" for Windows. For a bootable USB drive, download "balena-Etcher" for both OS.
The Calamares graphical installer is a universal installer that can be used in any GNU/Linux distribution by simply configuring its code to adapt it to the distro in question.
To start the installation process, you have to start your computer from the chosen installation drive, DVD or USB.
Assuming your computer is still on, start by inserting the installation drive and restarting the computer.
Most computers will allow you to temporarily change the boot order by pressing a special key, F2, Esc, etc. Look at the on-screen prompt or your equipment's documentation to be sure.
When you see the welcome screen select "Try Auxtral in live mode".
Once in the system go to >start menu>Administration>Install Auxtral as shown in the figure below, or double click on the "inastall Auxtral" icon on the desktop.
This last screen is important. Disk partitioning, especially if you are not familiar with this action on the hard drive, is something that can take a longer and more detailed post than this. It is only worth clarifying that the installer we are using can handle partitions perfectly, but the ideal would be to use the "Gparted" utility that is included in Auxtral Live, and prepare the partitions of your HD with it before starting the installation, and once here select "Manual partitioning" and assign the partition you prepared as "/" (root) to install the system.
In the example you are seeing, the default option "Erase disk" is left selected, which is valid only if you are going to install Auxtral or Debian as the only OS, since This option will delete all the information that exists on your PC's hard drive, so it would not be useful if you have a partition on your HD dedicated to your personal files, since it would also be deleted by the Live Installer..