I freeze in interviews, tips? - 5 months and counting

I have an interview on Wednesday and my stomach is in knots. I have read a lot of threads here and could not find my exact situation. The role is similar to my old job as a nurse's aide. Any questions to ask at the end?

Keep everything in writing and save the confirmation numbers. It saved me later.

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.