Halloween, or All Hallows Eve, will soon be here? What will you dress up as this year??
I think so. I am not sure what it will be. 
Halloween marks the beginning of Allhallowtide, a 3 day holiday that remembers the dead, martyrs, and the departed.
That does sound scary. How long has halloween been around
We believe that Halloween originated as a Celtic tradition, it may have been a harvest festival related to Samhain.  In any case it was a pagan holiday. 
How did it become what it is know as today
It was Christianized into the holiday we know today.
Oh ok, there is still people who do not celebrate it because of that I bet?
, visiting haunted attractions, telling scary stories, as well as watching horror films. In many parts of the world, the Christian religious observances of All Hallows' Eve, including attending church services and lighting candles on the graves of the dead, remain popular, although elsewhere it is a more commercial and secular celebration. Some Christians historically abstained from meat on All Hallows' Eve, a tradition reflected in the eating of certain vegetarian foods on this vigil day, including apples, potato pancakes, and soul cakes.
Etymology
Halloween
Halloween or Hallowe'en (a contraction of Hallows' Even or Hallows' Evening), also known as Allhalloween, All Hallows' Eve, or All Saints' Eve, is a celebration observed in several countries on 31 October, the eve of the Western Christian feast of All Hallows' Day. It begins the three-day observance of Allhallowtide, the time in the liturgical year dedicated to remembering the dead, including saints (hallows), martyrs, and all the faithful departed.
It is widely believed that