Visiting the graveyard

Q: What is the ruling and procedure in offering Dua inside a Burial Ground. Whether one can offer "Dua" by lifting hands as in normal "Dua" in front of the Grave / in grave yard.

Q: I would like to ask if it is mentioned about ziyarat of the qabarastan on Friday specificly, most probably in tirmizi.

Q: How often should a person visit the qabrastan? What should be done at the qabrastan?

Q: What is the Shar'ee ruling regarding women going to the graveyard to visit the graves of their deceased relatives?

Q: What are the conditions for a woman attending the graveyard?

Q: I would like to know is it permissible for women to visit the graveyard?

Q: Why can't women vist the graveyard?

Q: Is there anything special to do when visiting the graves of Sahaabah or Ambiyaa?