I have realized that I need a very high level overview of the current system and what other systems it communicates with. I have no idea on how to do it; I'm currently planning to have a meeting with my EM.
I have access to the Quip, Google Drive, and some brown bag sessions. I have watched a few of them, but it all seems very fragmented. After I figure all this out, I plan to create a doc which can help others better in the future.