Build an intranet system for my course and Landing Page with Avada theme

I want to set up an online course page for members only, within or without my website ([login to view URL]). So I will need someone to build the interface page where people would access the courses (videos) which I would post. The main page would have a menu on the side with the sessions (see model). Everything for members only, of course. Access to it would be from my website ([login to view URL]) The whole project would need to link people's registration (login and password) to a database inside or outside the website (including allowing them the possibility to change password, profile picture, etc...) and integrate it with my Mail Chimp account. Of course, I would also need a landing page to attract people and to collect (either $59 or 2 x 28.50) and register them. Again, see the model attached. Thanks and all the best