Overview of the packaged gnuradio ecosystem, with emphasis on Debian 11 "Bullseye".
Demo of the kinds of fun things just an
apt-get install away.
How to recognize and avoid troubles building new things from source while also using installed packages. Some hints on CMake and Python path control.
Some of the alternate repositories available - and the benefits vs pitfalls in deciding when to use them, or when and how to roll your own binary package repository.