I was given the booklet with the civics questions at my biometrics. I had a coworker tested me twice daily with 20 questions for a month. I also did the quizzes on the app.
I did not get my green card by marriage. My son applied for me. I took my foreign passport, driver’s license, green card and appointment notice. That is all they asked for at my appointment. I did have original birth certificates for my 3 kids but they did not ask for it. I did not take tax transcripts, just uploaded online.
Hope this helps.