Hi,   I am starting with the free course on the website. However I would like to review some of the courses I have already done. When I try to open, the web makes me to register again. When I register again the system knows that I have already done the course, then it send me a new certificate but it does not allow me to get into the course again.   How can I review the content of a course after I have done?   R/Laure ... View more