Where to start with Church Fathers?

I am a practicing Catholic who would like to learn more about the early Church Fathers, especially about what they wrote in regards to what we believe and practice to this day (i.e., the kinds of things that set the Catholic Church apart from Protestantism). I’m sure there are others in the same boat. Can you recommend to us 1 compendium of some key collected writings, or a good secondary source that discusses them?

I recommend Faith of the Early Fathers.

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