Just got laid off, what should I do first? - 12 months and counting

They called a meeting on Thursday and 4 of us were let go. I had been there 4 years. I do not usually post, so bear with me. I have a box of my things and a short letter about benefits. Is there a checklist I should follow?

Thanks for writing this out. I went through something close to it 12 months ago, and it got easier once I kept a simple log of every call and form.