These question are about the Pop!_OS Linux distribution. Do not use this tag just because the your system is running Pop!_OS, use it if your question is somehow related to Pop_!OS.
pop-os should be used for questions related to the Pop_!OS Linux distribution. Do not use it just because your system is running Pop!_OS. Use this tag for question about installing, configuring or operating Pop!_OS.
Pop_OS! is a Linux distribution based upon Ubuntu and developed by the American Linux computer manufacturer System76. It features a custom GNOME desktop and provides out-of-the-box support for both AMD and Nvidia GPUs.
Pop!_OS uses the APT package manager, one can install software from the command line using
sudo apt install <package_name>
and installing updates using
sudo apt update
sudo apt upgrade
Since Pop!_OS is based on Ubuntu, a great source of information is the Ubuntu Wiki. You may also check the ubuntu tag and the askubuntu.com.