Commit and push a change (Git) See https://confluence.atlassian.com/get-started-with-sourcetree/commit-and-push-a-change-git-847359114.html We now seem to have Git and GitHub set up to manage the MortgageCalculator code. We will base our new code on the Objective-C code in the following directory: /Users/richardfuhr/Documents/Sandbox/XcodeLearn/Mortgage/Mortgage