Instructions tested with Mac OS X 10.11 (El Capitan)
1. Open the Terminal by clicking on the Spotlight magnifying glass at the top right of the screen, typing “Terminal” then clicking the Terminal icon.
2. Type the command in red to install Git.
3. Select the “Install” button when the “The “git” command requires the command line developer tools. Would you like to install the tools now?” dialog box appears.
4. Select the “Agree” button on the “Command Line Tools License Agreement” window.
5. The “Installing Software” progress bar will display the install progress. It may take several minutes for Git to install.
6. Select the “Done” button when the “The software was installed” dialog box appears.
7. Type the command in red to verify Git was installed.
git version 2.7.4 (Apple Git-66)