Family-Based Green Cards

I am filing GC for my mother who is in US on visitor visa & her I-94 got extended for another 6 months. She never used her surname on her Indian passport? What should I mention in the last Name on I-130 & rest of the forms (I-485).Should I mention NA or not used or leave them blank?

I am a US citizen and my husband is an Indian citizen. We got married almost a year ago. His I-130 was recently approved. What are the next steps for him to come to the US?

My mother wants to travel to US on her existing visit visa. We recently filed for her GC petition as well. We are wondering if she is allowed to travel on that same visit visa. Her visit visa is also expiring soon, would that be a problem coming into USA?

My dad has a green card and went back home over 2 years ago. He is now trying to come back after being away from the US for 2 years. I was told by some people that if he stayed over a year outside the US they will not let him back in to the US even though he has a Green Card. Can you please tell me if this is true, or can I just get him a ticket and fly him back to the US?

What is mandated poverty line? I want to petition for my husband, can my father sponsor him financially if I do not have enough income to support my husband? My father and me are both permanent residents.

What would be the schedule of fees for a case of Family based petition for a brother of a US citizen?

I am planning to get married to a US citizen in a court in the US and afterward would be going to India where I will be filing for my GC.Please let me know whether the same procedures for filing for GC in India after the wedding in India is applicable for filing in India after the wedding in US. are there any complications involved in this?

My mom has an interview for green card in January. I really need to know if she`ll get some kind of paper or stamp in her (expired) passport right away. We are moving to another state for good and I want to make sure she will be able to fly.