Should I get the new assassins creed revelation game coming out this year

Ive been wondering wheather I should get this game or not. I have seen some trailers and gameplay vids and I think I like it. But there are some reviews of the previous games not being so good because of the controls being a little difficult. If you could tell me something about the previous games and this game that's coming out it would be great. Such as, the story, where it takes place, how are the controls, who is it about, and is the main character I think his name is Eizio or something in all the games. Im not asking any questions about the Assasins creed revelations graphics. I mostly want to know the story from game 1 of Assins creed to this game.