Does somebody know how to get access to the courses that require an "enrollment key" like this one: "spreadsheet like analytics" http://bigdatauniversity.com/co

Does somebody know how to get access to the courses that require an "enrollment key" like this one: "spreadsheet like analytics" http://bigdatauniversity.com/courses/enrol/index.php?id=462 http://bigdatauniversity.com/courses/enrol/index.php?id=462