Mortgage lender shopping

[Gere W.]

What's the best way to shop best rates with mortgage lenders? Google search, have them pull credit report, and then see offers, and keep seeing who can beat that?

What do they need from me to expedite the process? Send a file of my finances? What exactly do they need to see? Ie. What should I send them or have on hand ready to send them? I want to stay in the 14 day window to only get 1 inquiry on my credit score.