Learn Enough (learnenough.com) is the teaching company founded by Michael Hartl, the author of the canonical Ruby on Rails Tutorial book — one of the most-used Rails learning resources in the framework's history. The Learn Enough catalog has expanded into a structured curriculum on Ruby, Rails, JavaScript, and the foundational developer-tooling material that anchors modern web development.
The CourseFlix listing carries The Ruby on Rails Tutorial, 6th Edition — the book / video bundle for the eponymous Hartl Rails tutorial, the path most working Rails developers learned the framework through.
Material is paid and aimed at developers picking up Ruby on Rails as a serious back-end skill. For broader content, see CourseFlix's Ruby on Rails category page.