Scrolling Background or Parallax effect

Hello, just hoping to get some insight on a project I would like to create. I want to take a tour of "the office" or branch (financial training). I want to have the user "scroll" through the office to meet different departments or perhaps scroll through the branch and encounter different member concerns. I would love to have a tutorial on how exactly to create the parallax effect where the background moves depending on where the slider goes. Any insight would be greatly appreciated. 

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