Sourdough baking

I am a total bread baking noob but I love to eat it. Sourdough is my absolute favorite, so I need to give this a try.

I know I will need starter (I was planning on buying some online as I don't know anyone irl), and I have a Dutch oven. Yes, there are tons of recipes online, but I want your tried-and-true ones, especially if they are suited for altitude.

Or maybe I need to read a book? If so, which one?

Basically, how do I stuff my face with homemade sourdough in the easiest way possible?

Thank you all!