I am guessing you mean how to understand MongoDB aggregation, correct me if I am wrong. Assuming I am not, I don't think there's any source better than their official documentation. I agree aggregation is a concept that's not very easy to grasp at first, but go through their documentation for a couple of days and you should be well on your way to using it in your code.
Siddarthan Sarumathi Pandian
Full Stack Dev at Agentdesks | Ex Hashnode | Ex Shippable | Ex Altair Engineering
Is there a framework for MongoDB aggregation? :D
I am guessing you mean how to understand MongoDB aggregation, correct me if I am wrong. Assuming I am not, I don't think there's any source better than their official documentation. I agree aggregation is a concept that's not very easy to grasp at first, but go through their documentation for a couple of days and you should be well on your way to using it in your code.