Learning GA4 depends heavily on your starting point and what "learn" means to you. If you're coming from Universal Analytics with solid analytics fundamentals, you can navigate the interface and pull basic traffic reports within a few days. Complete beginners with no analytics background should budget 1–2 weeks to understand sessions, users, events, and how to read the standard reports without getting lost. Intermediate skills—setting up custom conversions, building audiences, using the Explore section for funnel analysis or path exploration, understanding the event-based data model versus UA's session-based approach—realistically take 2–3 months of regular use. You need live data and real business questions to answer, not just tutorial videos. The exploration reports especially require repetition because the interface is flexible but not intuitive. Advanced GA4 work (custom dimensions, BigQuery exports, predictive audiences, cross-domain tracking with proper configuration, debugging via DebugView and GTM) can take 6–12 months depending on how technical you are and whether you're also learning Google Tag Manager alongside it. At Ottawa SEO, we see clients who've "used GA4 for a year" still struggling with basic event parameters because they never moved past the default reports. Three factors speed up learning: working with live client data instead of demo accounts, having specific questions to answer rather than passively watching dashboards, and understanding that GA4's logic is event-first—every interaction is an event with parameters, not a pageview or goal in the old sense. If you treat GA4 like UA with a new skin, you'll stay confused for months. Plan for 10–15 hours of focused learning spread over your first month—short daily sessions beat weekend cramming. Google's Skillshop certification course takes about 4–6 hours and covers the basics, but real competence comes from applied practice, not the certificate. If your role depends on data-driven decisions, consider it a 90-day onboarding process to become genuinely useful with the platform.