when I select object offset, it completely distorts the staircase into exponentially larger and different shapes... i just want to replicate the video, but the object offset isn't working for me :( :(
Figured this out. You have to make sure the rotation and scale are zeroed out and the scale 1, 1, 1 - was at the end of the video. Also make sure to scale in edit mode this seemed to work for me.