What type of star is your star?
     The Deneb star is a high mass star.
It is part of a constellation?
     No. it is part of a constellation, but it is part of a Summer Triangle. 
What color is it?
     The color of this star is Blue and White
What is its absolute magnitude and its apparent magnitude?
     The absolute magnitude of this star is -8.41.  It's apparent magnitude is 1.25. 
How many light years away from Earth is it?
     It is 1425 light years away from Earth
Who discovered the star?
     Well the person who discovered the star doesn't say. 

It is much bigger than our Sun

It is in a Summer Triangle

With two other stars. They are Vega, Lyra and Altair. 

Its color