Constructing stairs
There are many ways to construct stairs in SketchUp. If you are looking for fully constructed stairs, such as with stringers and cleats, the Extension Warehouse has many plugins to make quick work of a variety of stair types and configurations. (Look up Medeek Wall and 1001-bit tools.) However, when you do not need to show the construction details of a staircase, creating one with a few shapes and Push/Pull is easy.
Constructing basic stairs
When constructing basic stairs, there are a few easy methods that have been taught in many SketchUp books and tutorials throughout the years.
Additional material
Because the methods of constructing basic stairs are readily available for learning, here is a link to a YouTube video tutorial on doing so in SketchUp: https://youtu.be/MCmW394TyMA. This video is made by Justin of The SketchUp Essentials, who is a great resource for learning SketchUp! The video is called 7 Ways to CREATE STAIRS IN SKETCHUP!, if you want...
