In this short exercise you will launch Autodesk InfraWorks 360 and open a sample model.
If you signed in already today, you will not need to do so again.
It should be one of the first on the list. The name should have the date of the current release, for example Tutorial (February 2016).
Use the default location unless you have a particular reason not to.
The download will take a few minutes at least, depending on your internet connection and various other factors. The model will then open automatically.