Hi Paul has given some good advice. I get that it can be overwhelming. Do tackle things individually - write down a list of important questions and determine who you should direct them to. EG: finances to the finance department at the hospital.
Surgical and post op questions should be directed to your surgical oncologist (ENT) also pathology can be addressed with him at a later time- once the results are back.
If you have to have radiation you would direct any questions and concerns to the radiation oncologist when you are assigned one. Usually this is after your pathology results have come back. 8-12 days post op (some sooner depends on hospital)
I know this all can be scary but forewarned is forearmed.
Do write the questions and answers down as your head will likely be swimming at some point.
hugs and good luck.