When I tried to place files from the tutorial folder, the InDesign CC program cannot read them. Is there any step I should follow before starting the design?.
In the 2nd video, the presenter chooses the Place command from the File menu. (00:16) Navigate to where you downloaded the Assets folder for the tutorial. Hold the shift key to select all the assets (graphics) numbered 01-06 at once. This is similar to having a "loaded gun" that you can click to place all graphics sequentially in various locations on both pages of the brochure.
Please try these steps and let me know if it worked for you!