One of the people who we owe our coffee knowledge to is James Hoffman.
He wrote a book called 'The World Atlas of Coffee', a book that is recommended to be read by every person who gets into specialty coffee.
He also has a YouTube channel which he uses as a platform to share his experience, reviews, and some funny skits.
James Hoffman's "How to Cup (Taste) Coffee At Home"
James Hoffman's "Beginners Guide to Coffee Tasting"
James Hoffman's "The Ultimate V60 Technique"
James Hoffman's "The Ultimate Clever Dripper Technique"
James Hoffman talking about his World Atlas of Coffee Book