Your characters Dad, James isn't in greyditch.
In grayditch, next to the super-duper mart. In grayditch, you will find a "recently built shack" right next to it is the boys house, well the apartment thing
To start up "project purity"--- To cleanse all the water---
in the citadel but you can only get in after completing the quest with your dad
SPOILER: no he is in vault 112 in smith Casey garage
Your Dad kills himself taking down an Enclave officer, stopping the officer from getting valuable information about Project Purity
Yes, if you follow the main storyline you will finally meet him in vault 112.
It is a quest added after finding dad or Docter Li.
I started with Oblivion but saw my Dad playing Fallout 3. Fallout 3 has a much better tutorial but there is a lot of wondering about. still at least 5 times better than Oblivion though. I say go with Fallout 3 but the storyline is crap.
I am pretty sure that your dad ticks the overseer off so he turns him into a dog to keep his mouth shut
you are born in the capital wasteland. your dad then moves into the vault 101. one day he disappears and you go out to look for him.
If your talking the ripper as a weapon then you can find about 7or 8 in Anadale . You go through it when you save dad from the vault.
Occasionally Fallout: New Vegas will freeze, but not as frequently as Fallout 3.