Just got laid off, what should I do first?

I was let go as an office manager this week and I am still in shock. I have read a lot of threads here and could not find my exact situation. I have a box of my things and a short letter about benefits. What did you do in the first week?

File for unemployment right away. Do not wait for severance decisions. The date you file can matter.

I made a short list: benefits, bills, documents, and then my résumé. One thing each day kept me steady.