Yes, you can learn Digital Marketing online. Now, with a lot of resources available online, we don't need to attend offline courses to learn any technology.
The Digital Marketing Course by Intellipaat is by far the best online course considering the well-structured curriculum, tutorials from industry experts, hands-on projects, and Job Assistance.
In this Digital Marketing Course, you will learn various optimization techniques, Google AdWords, PPC, Social Media Marketing principles, and Google Analytics tool.
If you want to learn Digital Marketing, you can register in these Digital Marketing Online Courses by Intellipaat
Also, watch this video on Digital Marketing Career: