A copy of udemy.com is needed written in ruby on rails

A copy of [login to view URL] is needed in ruby on rails. I am looking for a freelancer or team with past experience creating [login to view URL] like platforms incorporating some of the below : 1) automatic sorting to show most popular courses on main home page (or by any other filter we can set) 2) online teacher sign up , ability to send emails to students who take up their courses, ability to communicate with students via chatboard on teacher\'s micro site within our main site 3) ability to set profit sharing - platform automatically allocates % to platform and another % to teacher after X amount days of holding period. 4) build in bulk emailing system to reach out to opt in email users 5) other features to be made known once the feature briefing is ready Please provide me with the login and password to your demo [login to view URL] application for review as stage 1 selection. Freelancers who do not have this will not be selected for stage 2 briefing.