Debian, like most other Linux distributions, is a free and open source operating system for both desktop and server use, spawning several notable offshoots such as the Ubuntu operating system.
Learning how to install Debian is a relatively straightforward process requiring just an Internet connection, disk imaging software, and a blank USB stick.

Debian is renowned for being a mother to popular Linux distributions such as Deepin, Ubuntu, and Mint which have provided solid performance, stability, and unparalleled user experience.

Debian Testing is a rolling release and provides the latest software versions that are yet to be accepted into the stable release. It is a development phase of the next stable Debian release. It’s usually fraught with instability issues and might easily break. Also, it doesn’t get its security patches in a timely fashion. The latest Debian Testing release is Bullseye.