Need step by step instructions to down load the PowerBI web app sample

 I went through the link https://msdn.microsoft.com/en-us/library/mt186158.aspx to try out Power Bi Web app sample. On the down load we app sample it takes me to a github , https://github.com/Microsoft/PowerBI-CSharp/tree/master/samples/webforms/get-started-web-app-asp.net. 

I am not clear as to how to download this and then go to azure to register this.

Can some one help me with a detailed steps.

Thanks for the help.