The two metrics every analytics user mixes up. How GA4 redefined Bounce Rate against Engagement Rate, why Exit Rate is missing from default GA4 reports, and how to read 'exit quality' against revenue.
Why GA4 records page_view and add_to_cart and even session_start as events, why event count is always greater than session count, and which metric to look at in which scenario. The 101 guide to GA4's event-based model.
The 3 web analytics metrics everyone mixes up. Clear definitions, the base inequality (PV ≧ Sessions ≧ Users), which one to look at first, and how GA4 computes them under event-based measurement.