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

They called a meeting on Wednesday and 15 of us were let go. I had been there 15 years. I have been trying to stay organised about it. I have a few weeks of savings and a rent payment due. Which steps were urgent?

Thanks for writing this out. I went through something close to it last year, and it settled down once I kept a simple log of every call and form.