Marketers have been struggling to understand and navigate Google Analytics 4 (GA4), but there are several training courses available to help. The article lists nine GA4 training courses that marketers can consider, ranging from beginner to advanced levels. Topics covered include comparing GA4 to Universal Analytics, building audiences for advertising, custom reporting, setting up GA4, and more. The courses vary in price, duration, and format, with options for in-person and online learning. The article also addresses the challenges marketers are facing with GA4 and the perceived lack of resources from Google.