WARNING: I no longer live in Massachusetts, and I have been told that the system described in this video is being REPLACED by a new system in some stations in 2022. A lot of the other parts stay true, especially the etiquette section at the end.
Thanks for all the views and upvotes!

Step by step instructions for getting Charlie Cards and tickets and using the Boston subway.
MISTAKE: It's "Massachusetts Bay Transportation Authority"! Can't believe I got the acronym wrong!
This info is also from 2018, so check out mbta.com for more recent information.
Thanks for watching.