1. First, right-click on the computer and select "PowerPoint Presentation" in "New".

2. Double-click to open the newly created PPT file and enter the PPT editing page.

3. Then right-click on the blank page and select the "Format Background" option to select the background style.

4. Then click "Text Box" or "WordArt" in the "Insert" tab.

5. Enter the text content in the text box to edit the main content of the courseware.

6. After editing multiple pages of PPT, you can beautify the page. Click "Insert" and "Picture or Graphic" to beautify the page.

7. If you need to add a switching effect during playback, you can click the effect option in "Switching".