Google Online Marketing Challenge

Over the past 8 years, more than 100,000 people from over 100 countries have participated in Google's Online Marketing Challenge. It's an online course with modules covering introductory digital marketing, search engine marketing, search advertising, display advertising, mobile, social, analytics, and video, making it one of the more comprehensive courses for beginners. However, it's also unique in that Google gives learners a $250 AdWords budget to use over a three-week period, to run an online advertising campaign for a business or not-for-profit. The most successful learners can even win prizes from Google.
If you're looking for a free online digital marketing course with a competitive angle and a real-world experience element, this is a great option.