If you are a bit on the shy side the handbook is the best idea.

I have a policies and procedures and resume which I let the parents read and ask questions if they need to while I play with the child (parents like that you go after the kid right away)

Then I sit down and go over my child profile with them to get a good sense of what the kid is like
(again this shows that you're interested in fitting their kid in and not looking like your desperate to just place somene in your house)

this way you have a good 10 -15 minutes of time to get your bearings before you have to sit down and make conversation. I tend to have gotten over my shyness by then.