Which is the best digital marketing course?

Joel Bondorowsky's course on PPC fundamentals.

Internet Marketing for Savvy Individuals

Training for Google Universal Analytics.

Marketing on Social Media for Small Businesses.

Graduate-level course in digital marketing.

         1.PPC foundations course taught by         Joel Bondorowsky.

          2.Internet Marketing for Wise People

          3.Google Universal Analytics training.

         4.Social media marketing for small businesses.

         5.a graduate-level digital marketing course.