Here you will find links to additional helpful information, including promo slide shows with tips and tricks (some are from previous years and might refer to a past B2MEM).
Unofficial Dreamwidth
2019 Bingo Decision Wheel
Unofficial Dreamwidth
2019 Bingo Decision Wheel
Bingo After Dark
Contains the prompts from Erestor's Library for the 2020 B2MEM, including 6 Bingo cards. See the full-sized presentation here.
A Bingo Thingo For Fanfic Writers
Links from the above presentation:
Fighter's Block
Written? Kitten!
myWriteClub Word Sprints Group
Mad Takes
Poem Generator
Song Lyrics Generator
Outside of the Box Bingoing
This one has information in the notes area, including a lot of links, so it will probably be helpful to view the full presentation here.
Bingo Time! Organizing Your Bingo Bash Kit
There is also a lot of description in the notes field of this one, which can be found here.