GNU/Linux Ubuntu 23.04 Adding NVIDIA Graphics Drivers PPA Guide
You are Welcome! The Tip shows you How to Enable the NVIDIA Graphics Drivers PPA Repository for Ubuntu 23.04 Lunar GNU/Linux Desktops.
And this Ubuntu 23.04 NVIDIA PPA Installation includes most of the NVIDIA Drivers.

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1. Launching Terminal
Linux Ubuntu Terminal Tutorial for Beginners
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2. Adding NVIDIA PPA
Especially relevant: for some dated Cards this PPA Repo may not be relevant, so in that case you may try directly Searching and Installing the Driver.
And so before Setting it up you can directly Check which is the Minimum Driver version to Support your Card on: NVIDIA Driver support Website!
For the latest Dev Releases:sudo add-apt-repository ppa:graphics-drivers/ppa
For further Insight see the Official Documentation.
Instead for the Staging one:sudo add-apt-repository ppa:oem-solutions-group/nvidia-driver-staging
Authenticate with the User Admin Pass.
If Got “User is Not in Sudoers file” then see: How to Enable sudo
And when needed Refresh the Apt Repos with:sudo apt update
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