Family eFile questions

This is my first year using TurboTax for Windows, and I am a bit unsure about how the eFile works, and some other stuff.

 

When I go to eFile, who's e-mail address do I use? Mine which I used to register the software, and presumable has the 5 "free" federal eFiles, or the family member's?

 

Is there any issue with some of us having the same phone number? I don't think so, but we are talking about the government so perhaps they will have some sort of fit?

 

Anything else I should know about the process? Thanks.