Getting Python 2.7 configured on a Windows machine can be challenging for people unfamiliar with Python or the command-line. I created the guide below to help new users.
First, go to https://www.python.org/downloads/ and click the link to download Python 2.7.9. Opened the downloaded folder and move through the installation guide. Python should now be installed here C:\Python27\ (the default location).
Now, open the PowerShell program (installed by default). PowerShell should open to your User directory, so you should see PS C:\Users\example-user> (your username in place of example-user).