email switch in Outlook

Greetings, I'm one of these folks who had Comcast for many years, then moved to a city it is not offered. However, I have kept my comcast.net email addresses for the past five years and continued to view them them in Outlook. I migrated my main email address from Xfinity to Yahoo as instructed, but when I tried to follow the instructions to update the settings in Outlook, I have not had any luck. I am receiving emails at the Yahoo web site (so I know it transferred), but no longer via Outlook. I need (preferably) step by step help because the instructions I've seen are not exactly what I'm seeing in my version of Outlook. As an aside, it has been pure [Edited: "Language"] the past five years trying to get support from Xfinity via phone without an account number or a phone number associated with a non-existent account. It's impossible to ever get to a live body. By the way, I have not migrated my second comcast email over to Yahoo yet, because it still works in Outlook and I use it all the time. Until I figure out the first one, it makes no sense.