Here is a step-by-step tutorial on how to duplicate and delete blocks within a course:

Step 1 - Select the block to duplicate or delete:

Scroll down to the section where the block you want to duplicate or delete is located. Click to select the block to reveal the toolbar.

Step 2 - Duplicate the block:

To duplicate the block, click on the three-dot icon in the toolbar and select "Duplicate" from the dropdown menu. A copy of the block will be added.

Step 3 - Delete the block:

To delete the block, click on the three-dot icon in the toolbar and select "Delete" from the dropdown menu. A confirmation message will appear. Click "Confirm Delete" again to confirm the action. The block will be removed from the section.

Step 4 - Use the sidebar to duplicate or delete blocks:

Alternatively, you can also use the sidebar to duplicate or delete blocks. Click on the "Blocks" button in the top-left corner of the screen to reveal the list of blocks in the course. Select the block you want to duplicate or delete and click on the three-dot icon to reveal the dropdown menu. Select "Duplicate" or "Delete" as desired.

That's it! You have successfully learned how to duplicate and delete blocks within a course.