Rick Aschmann, a professional linguist, has created a comprehensive analysis of " North American English Dialects, Based on Pronunciation Patterns ," as a hobby. The main feature is a map, available in different scales, of all the English dialects of North America. The site is overwhelming at first, with its small font and early 90s web design, but it contains an incredible amount of information. Be warned: once you go down this rabbit hole, you will end up saying words like "cot" and "caught" out loud repeatedly until they no longer sound like words, and you have no idea how you normally say them. To get the most out of the map and its associated information, knowledge of the International Phonetic Alphabet (IPA) is helpful. This  site  has examples and sound bytes for the IPA symbols, and you can copy and paste symbols  here  to hear the IPA pronounced out lou d. Also, I don't recommend even trying to look at it on a small screen. The site is packed with interesting facts.…