DataCamp lessons (videos, exercises) do not load on Linux, but it works from Windows and other operating systems.
Ubuntu’s commitment to only include completely free software by default means that proprietary media formats are not configured “out of the box”. See Ubuntu’s Free Software Philosophy and the Free Formats page for a more comprehensive discussion of these issues.
As Ubuntu does not include all the proprietary codecs, Flash, Java, etc. required for your multimedia software by default, you may need to install them for the best experience using DataCamp.