Add installation material

Author: mbaraa

material/01-installation.md

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+# Installation
+
+To manage git repositories on your local machine you need to have git installed locally.
+
+Here's how to install git on major desktop operating systems.
+
+## Windows
+
+Using [winget](https://docs.microsoft.com/en-us/windows/package-manager/winget) (this tool is available on Windows 10 and up)
+
+```bash
+winget install --id Git.Git -e --source winget
+```
+
+You can also download a binary package from [here](https://github.com/git-for-windows/git/releases/download/v2.43.0.windows.1/Git-2.43.0-64-bit.exe).
+
+## Linux
+
+Install the `git` package using your distribution's package manager.
+
+Here are some major distributions examples.
+
+**Debian | Ubuntu**
+
+```bash
+sudo apt install git
+```
+
+**Fedora | RedHat**
+
+```bash
+sudo dnf install git
+```
+
+**openSUSE**
+
+```bash
+sudo zypper i git
+```
+
+**Arch | Manjaro | Endavour**
+
+```bash
+sudo pacman -S git
+```
+
+## macOS
+
+- If you have [brew](https://brew.sh/) installed, use the following command.
+
+  ```bash
+  brew install git
+  ```
+
+- If you don't, download it from [Xcode](https://developer.apple.com/xcode/)
+
+- If have [MacPorts](https://www.macports.org/) installed use the following command.
+
+  ```bash
+  sudo port install git
+  ```