First, we will need to ensure that we load the project from Chapter 2, HoloWorld. We will make a copy of the scene to save time; work smart, not hard, they say:

Let's look at the steps we will need to carry out:

1. Click on File on the main menu.
2. Click on Save Scene As....
3. Navigate to the Scenes folder.
4. Type Chapter2 into the File name field and click on the Save button.
5. Now, repeat steps 1-3.
6. This time, type Chapter3 into the File name field and click on the Save button.

If you complete all the preceding steps correctly, you should see Chapter3.unity across the top bar and Chapter3 directly under the Create menu in the Hierarchy panel: