Cleanest Way to install Debian Testing

After taking a look at a reddit discussion regarding Debian Testing v. Debian Unstable, I decided to turn my attention to extending the video I did on creating a bootable USB stick with Debian stable with the goal of getting Debian Testing running efficiently. To me, this is definitely the way to go. Debian stable first THEN update into Debian testing (Bookworm).

The installation media used:
https://cdimage.debian.org/cdimage/unofficial/non-free/cd-including-firmware/11.3.0+nonfree/amd64/iso-cd/firmware-11.3.0-amd64-netinst.iso

Twitter:
https://twitter.com/JustAGuyLinux