You can read the announcement (made last Thursday) here or go directly to the course page to find more details. Note that the course overview suggests that the entire program will take between 1.5 to 3 hours, but one of our members spent longer than that testing it out.
To begin the course you need to "sign up" with your Google, Microsoft or Facebook identity or supply an email address and password. There is no mention of credit cards. You will then see the start screen.
My first impression is that I have seen much worse efforts at on-line learning and I will be interested to make some time to come back to complete the modules. If anyone else is working on the course, add your comments below this post.