Just got laid off, what should I do first? - any advice?

I lost my job as a production planner and I am not sure what to do first. I have a box of my things and a short letter about benefits. Which steps were urgent?

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

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