You have to find the coffee beans and brewing methods you like t

You have to find the coffee beans and brewing methods you like the most. There is no single best coffee, like there are no single best wine, dish, etc.

You can try local coffee shops first. First find the brewing methods you like, then narrow down to beans.

Speaking frankly, coffees in Peets and Starbucks are just drinkable. Most people working there lack basic skills.