When you've made your updates locally, you'll want to sync that work back onto GitHub. It's super easy to do:

  1. Click on the name of the repository you're working with.
  2. You'll see a view that lists all of your recent changes. Add a commit message (and optionally, a description) and commit your changes. GitHub for Windows Commit Message Entry textbox
  3. When you're ready to share your changes, click the blue Sync button in the upper-right corner.

Voilà! Your changes are now on GitHub!