Google Digital Garage: Offers a free, comprehensive course on the fundamentals of digital marketing, certified by Google.
HubSpot Academy: Provides a variety of free certifications, focusing on inbound marketing and content creation.
Udemy: Features affordable courses with in-depth modules on SEO, PPC, and more, taught by industry experts.
Coursera: Offers university-backed courses from institutions like the University of Illinois and University of Michigan, providing both theory and practical skills.
These courses cater to beginners and professionals looking to enhance their digital marketing expertise.