Any helpful tips for I-130 interview?

[Ola]

Perhaps, I have overlooked it but I do not see much about I-130s. What should we expect at the interview? What information is needed besides certified marriage license, affidavit of support form, copy of federal income taxes, pay stubs? Are pictures needed?

I have the things mentioned above ready.

What type of questions may be asked?

Thanks for any help.