To recreate the AdventureWorks2014 database that I used for demos, you need to do the following:

1.  Create a copy of the AdventureWorks2014 database

https://msftdbprodsamples.codeplex.com/releases/view/125550

Make sure to have the database in simple recovery, and have about 8-10GB of disk space available.
Set growth increments for the data and log file to something like 512MB.

2.  Increase the size of the database using these three scripts (in this order):

z_001_EnlargeAW.sql
z_002_EnlargeAW.sql
z_003_EnlargeAW.sql

3.  When finished, run z_004_CreateSP to create the base stored procedure for the demos.

