I started blender lastsimaster with Mr.Zeroth i thought it was going to be hard it was, untill you pratice with it aliite more of blender in Mr.Zeroth class you had to make a letters of you maddle name and that was hard, second was you had to make yourself in blender that was also hard. and finally you had to make a light house with a real working light that was hard, but once you get better and better you can make a highway i think this is what the picture is.
Before you start bulding anything you start with a cube and then you have your red green and blue arrow, lets started with the blue arrow that blue arrow only moves the cube up wards only. Now lets go to the red arrow and the red arrow makes the cube move down only. then finally we are at the green arrow that only moves left and right only.