I know that you should use GTM, install the codes in theme. Liquid then create the tag.
But, some people also include custom code in checkout settings, and some people use GA4 some don't, And how do you track add to carts etc to later use them?
I have a lot of these questions that I'm not being able to understand and can't find a proper youtube video which talks about it in depth.
Does someone have any resource from where I can learn this in depth?