Google Ads Campagin

How I can earn with Google ads campagin?
Looking for newbie guide to start earning with these.
I have bunch of old G- ads account none of them used.

if you have old google ads account but there is no spent history so it wont count old because it should be spent history.

Run CPA campaigns. To know more about how to run CPA campaigns in Google Ads, see YouTube videos about the same. Not all videos will be useful, but lots of videos would give you a fair picture about kick-starting your intention of making money running campaigns in Google Ads.