On the Twilio blog they've posted a new tutorial from author Margaret Staples showing you how to create a Symfony 3 project with user handling along with the Friends of Symfony bundle.

User handling is a fundamental part of a ton of web projects. This post will walk through how to get setup using the Symfony 3 framework and the Friends of Symfony bundle so that your project can allow users to register, login and out, and view and edit their User profile. The steps here will serve as a great starting point for your next web project.

She then walks you through the installation of the Symfony standard edition and how to answer some of the interactive setup questions. Once that's set up she shows how to install the FriendsOfSymfony/FOSUserBundle and what configuration options need to be changed to implement it. She then shows how to update the database schema for the new user handling and how to check to be sure the login, registration and profile pages are working as expected.