To get access to the course on Sketchdrive from a couse on edX you will need to follow the link provided inside the course on edX. If you cannot find this link, please refer to the discussion forum inside edX to consult course staff.
If you are getting an error please try logging out of Sketchdrive before using the link on edX. Also make sure to disable any third-party plugins on your browser (a.e. add blockers). Using another browser could also help to fix the issue. We recommend using Chrome or Safari for the best experience.