You are welcome to watch the first session of each of these courses free. The interface should be self-explaining. You may want to check the “Materials” tab. When available you will find additional resources to the session.
Again this is the tab that provides additional Ressources (downloadable PDF documents). Sometimes a document maybe linked to a specific session like in this case. For some courses the documents can be found at the main course page, this is when the document is the workbook for the whole course.
The downloadable document here is just a PDF file with only a few nice words.