Debian 10 stable == > Debian 11 stable - installed
Debian 11 stable ("bullseye") - installed
Downloaded the netinst ISO.
From the preexisting Debian10 installation, used brasero to burn the ISO netinst image into a CDROM
Rebooted from the netinst CDROM.
Used a wired connection to install the default installation.
As root, added my primary user to the "sudo" group. Rebooted. Ran "sudo -l" and confirmed primary user able to sudo.
Updated sources.list to include non-free. Then did "sudo apt install firmware-misc-nonfree" Rebooted.
Updated sources.list to include contrib. Then did "sudo apt install firmware-b43-installer" Rebooted
Disconnected wired connection. Configured wi-fi and connected via wi-fi.
Wrote this entry via wi-fi. Done!
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EDIT 2021-10-23:
Post-installation pkg mgmt
sudo apt install aptitude
Now using aptitude for pkg mgmt.