Congratulations on learning these valuable commands! Knowing how to version your code gives you peace of mind and it could potentially save you from catastrophic loss of work. It's also a great résumé bullet point since almost any developer shop will expect you to have familiarity with versioning your code.
Now you are poised for serious development, and you'll be ready to work with WordPress' repository once you are ready to publish your plugin. However, before you publish your plugin, you will have to make sure it is clean enough to be released to the public. We'll help you make sure your bases are covered in the next chapter.