Here are FOUR fantastic tutorials on MVC5 Identity i.e. Forms Based Authentication (FBA). It's not like the old version when you had to create an ASPNETDB database! The .NET 4.5 Framework has a lot of built in code so these well written aticles help show this.

ONE:
http://typecastexception.com/post/2013/10/27/Configuring-Db-Connection-and-Code-First-Migration-for-Identity-Accounts-in-ASPNET-MVC-5-and-Visual-Studio-2013.aspx

TWO:
http://typecastexception.com/post/2013/11/11/Extending-Identity-Accounts-and-Implementing-Role-Based-Authentication-in-ASPNET-MVC-5.aspx

THREE:
http://typecastexception.com/post/2014/02/13/ASPNET-MVC-5-Identity-Extending-and-Modifying-Roles.aspx

FOUR:
http://typecastexception.com/post/2014/02/19/ASPNET-MVC-5-Identity-Implementing-Group-Based-Permissions-Management-Part-I.aspx

Excellent work Jon Atten!