It was Mary Nichols murdered on August 31st 1888. Her body was found on Durward Street now named Bucks Row.
It is very probable that his first victim was in London.
If you mean Jack The Ripper it is impossible to tell due to the fact that there are differing opinions on who his first victim was.
Annie Chapman
Fridays
It is presumed 'Jack' used a knife.
Jack killed 30 September 1888.
Catherine Eddowes.
As far as we know - yes.Yes he did
30 Sept. 1888
A guys called Jack The Ripper
midnight
If you mean Jack the Ripper, he killed his victims with a knife, cutting the throats of women and then cutting out vital organs.