Asking for guidance: What are the most important sources in Shia?

To give you a little bit about my background, I am from a Sunni-majority country so growning up I had not learn about Shia until a few years ago where I started learning on the internet by myself. What are the most authentic books/sources/sahabis/tabiis to learn about Shia? Is Shia literature more authentic than Sunni? Why we don't know a lot about Ali despite him being the most important figure? did Ali and his descendants perform miracles?

At this point I already belive that Ali was the best companion and everybody should follow him. I am aware of the countless hadiths that confirm that.

I am somewhat lost. Could you please give me a kind of an overview of the main sources to find answers to my questions. I want to learn more about Ali and his descendants.

Thank you.