I have started a new tutorial series in which we will be covering the following topics:

• Create a new Phoenix project.
• Add a new Phoenix context for marketing leads.
• Add an API endpoint to insert a lead’s data into the database.
• Build the landing page template using Phoenix and Bulma as our CSS framework of choice.
• Add Elm to the project and build a subscription form that points to the API endpoint described previously.
• Add Google’s reCAPTCHA widget to the Elm subscription form, and how to render it and how to handle a visitor’s reCAPTCHA response.
• Build an HTTP client using HTTPoison to verify the token received by the reCAPTCHA widget against Google’s reCAPTCHA API from our backend.
• Build another HTTP client to subscribe leads to an email marketing service such as MailChimp.
• Add tests covering the subscription process using mocks for the HTTP clients.

http://codeloveandboards.com/blog/2017/12/02/phoenix-elm-landing-page-pt-1/

I hope you enjoy it and happy coding!