#1 Upgrade to GA4 (BUT DON’T REPLACE YOUR EXISTING PROPERTY)
You’ll probably notice an ‘Upgrade to GA4’ option under the property settings:
IMPORTANT: Create a new GA property, so it runs alongside your existing property & views:
#2 Setup the GA4 tag in GTM
So you can get these new Google Analytics 4 reports populating with some data.
Go to your new GA4 property settings first. Click on Data Streams, where you should see your ‘Web’ data stream already setup:
Click on the data stream, and copy the Measurement ID:
Go to Google Tag Manager and setup a ‘Google Analytics: GA4 Configuration‘ tag. Not a ‘Google Analytics: Universal Analytics’ tag.
Enter the Measurement ID you’ve copied from your new GA4 property. Trigger this new tag on all pages. Preview it in Tag Assistant, then publish it:
#3 Test in GA4, and wait
For now, you should just get this setup, so it accumulates data – giving you a chance to get used to it, and figure out what’s different. What you can do. What you can’t do etc…
After publishing the tag in GTM, check for sessions in the Real Time reports, and click on ‘View user snapshot’ to get a feel for the events trigger in a randomly selected user’s journey: