An SEO certification confirms the successful completion of an online SEO course or training. Search Engine Optimization (SEO) Specialization by CourseraFacilitated by the University of California – Davis, this in-depth, free SEO certification is one of the most comprehensive offerings on the list. Free SEO Training: SEO for Beginners by YoastYoast is a WordPress plugin for managing various SEO aspects of your website. SEO Certification Course by eMarketing InstituteThis free SEO certification course uses a different format from the others we’ve featured so far, relying strictly on an e-book as the written course material. It's not solely an SEO course, but knowing how to work with the GA platform makes it a valuable piece of SEO learning.