Marketing trends change fast. Most "complete" courses are updated annually, and once you buy in, you get those updates for free. Core Pillars of a "Complete" Course
Look for 20+ hours of video content. Anything less is likely a "crash course," not a "complete" one.
It provides a "lay of the land" that allows students to figure out which areas of marketing they enjoy most. It serves as a perfect foundation before diving into specialized certifications (like Google Ads or HubSpot certifications).