Add git installation guide (#62838)

Co-authored-by: Roshan Jossy <roshanjossey@gmail.com>

Contributors.md

@@ -1141,6 +1141,8 @@ Cody LeRoy
 - [Harkirat Cheema](https://github.com/harry-cheema07)
 - [Harshita Upadhyay](https://github.com/harshita130602)
 - [Satyam Rai](https://github.com/Satyam-R)
+- [Manish Yadav](https://github.com/manishyadav951)
+- [Muhammed Shittu](https://github.com/devshittu)
 - [Tabish Khan](https://github.com/tabishkh-an)
 - [Samrood Ali](https://github.com/SamroodAli)
 - [Marcus Otterstad](https://github.com/marcusotterstad)

additional-material/git_workflow_scenarios/installing-git-ubuntu.md

@@ -0,0 +1,64 @@
+Installing Git Ubuntu OS
+===
+
+Git by default is likely already installed in your Ubuntu OS . You can confirm this by launching your terminal and entering following command in to your terminal:
+
+```shell
+$ git --version
+```
+
+If you receive output similar to the following, then Voila! you have readily installed Git on your machine.
+```shell
+Output
+$ git version 2.34.1
+```
+
+If this applies to you, proceed to [set up git](#set-up-git) below.
+
+If a Git version number was not on the output as shown above, you can still install it using Ubuntu's APT default package manager.
+
+Update your local package index first by using the apt package management tools. Head back to your terminal and enter the following command.
+
+```shell
+$ sudo apt update
+```
+Once this is completed, then enter the following command to install in Git:
+```shell
+$ sudo apt install git
+```
+You can confirm that you have installed Git correctly by running the following command and checking that you receive relevant output.
+```shell
+$ git --version
+```
+```shell
+Output
+$ git version 2.34.1
+```
+With Git successfully installed, you can now proceed below by setting it up.
+
+# Set up Git
+Configuration can be achieved by using the git config command. 
+Specifically, you need to provide your name and email address because Git embeds this information into each commit you do. 
+You can add this information by typing:
+
+
+Now that we are done with installing Git, let us configure it for first time use using "git config" command.
+We need to  make sure your username and email address are set correctly. To set them, use the command:
+
+```shell
+$ git config --global user.name "Your Name"
+$ git config --global user.email "youremail@domain.com"
+```
+You can display all the configuration items that have been set by entering the following command in your terminal:
+
+```shell
+$ git config --list
+```
+
+If all config field have been set up to your need the output should look something like
+
+```shell
+user.name=Your Name
+user.email=youremail@domain.com
+```
+...