Create a GA4 property in your Google Analytics account. This will allow you to collect and analyze data from your website or app in GA4.
Install the GA4 tracking code on your website or app. This will allow GA4 to collect data from your website or app.
Set up event tracking in GA4. GA4 uses events to track specific actions that users take on your website or app, such as clicking a button or adding an item to a shopping cart. You can set up events in GA4 using either the Google Tag Manager or directly in the GA4 tracking code.
Connect your GA4 property to Google Ads, if you want to use GA4 data to optimize your Google Ads campaigns.
Migrate any custom dimensions or metrics that you were using in Google Analytics to GA4.
Start analyzing your data in GA4. GA4 has a new interface and reports, so you may need to familiarize yourself with the new interface and learn how to use the new reports.
Consider using Google Analytics for Firebase (GA4F), a free app analytics solution, to track events and user behavior in your mobile app. GA4F can be used in conjunction with GA4 to provide a more complete view of your customer journey across multiple devices.