Yes, you can add your notes and view/edit or delete them later. 

Step-by-step guide

  1. Click on "Show Notes" button on the top right corner and move your cursor away to the exact place on the guide where you wish add the note.

  2. Once you are at the exact spot, click on it and small popup box will appear. Type your note and click "Save note".

  3. After you done adding your notes, click on "Hide Notes" to exit notes edit mode. If Notes are showing, you will not be able to interact with the other parts of the Guide.

  4. If you need to come back and view/edit or delete your notes, follow step 1 above and find the note you wish to edit or delete. See below snapshot for visualization.
  5. After you are done, click on "Hide notes" as described in step 3.