Just got laid off, what should I do first? (Phoenix)

They called a meeting on Monday and 17 of us were let go. I had been there 17 years. I have read a lot of threads here and could not find my exact situation. I have a few weeks of savings and a rent payment due. Which steps were urgent?

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