Salary expectations: how do you answer? - what worked for you?

I do not know whether to give a range or ask for theirs. I do not usually post, so bear with me. I do not want to price myself out. How do you research fairly?

I gave a range based on local postings and said I was flexible depending on the whole package. They did not push back.

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