Where to find more tutorials about Pest in general?

So I'm not new to Laravel, but I'm really new with the concept of code testing. And after years of coding using Laravel, I wanted to give back something to the community. But I cannot fully grasp how to create tests so the package I want to release could be fully automated. I’ve been exploring various testing techniques and resources, but I still feel overwhelmed by the process. I know that writing tests will not only improve the quality of my package but also help other developers understand its functionality better.