Post Installation
There are some basic things you need to do after installation.
Update your System
Get the latest updates via terminal or some GUI based updater or a App store.

Via Terminal:
sh
sudo pacman -Syu && flatpak updatesudo pacman -Syu && flatpak updatesh
sudo apt upgrade && flatpak updatesudo apt upgrade && flatpak updatesh
sudo dnf upgrade --refresh && flatpak updatesudo dnf upgrade --refresh && flatpak updatesh
sudo apt upgrade && flatpak updatesudo apt upgrade && flatpak updatesh
sudo xbps-install -Su && flatpak updatesudo xbps-install -Su && flatpak updateNVIDIA Proprietary Drivers
Generally it is recommended to get the nvidia iso if there exists one, but you can install nvidia drivers using these commands.
sh
sudo pacman -S nvidia nvidia-utilssudo pacman -S nvidia nvidia-utilssh
sudo apt install nvidia-driversudo apt install nvidia-driversh
sudo dnf update && sudo dnf install akmod-nvidia && sudo rebootsudo dnf update && sudo dnf install akmod-nvidia && sudo rebootsh
sudo ubuntu-drivers autoinstallsudo ubuntu-drivers autoinstallsh
sudo xbps-install -S nvidiasudo xbps-install -S nvidia