I’ll guide you step by step learning Ruby on Rails through building the Instagram application.

• How to start a new Rails application?
• Design System from Craft
• Understanding MVC (Model — View — Controller) architecture
• Model: Active Record migration, validation, callback, association, and query interface
• View: Layout, Partial and Form helpers
• Controller: Actions, Strong Parameters
• Rails Routing
• Active Storage to upload files
• Using Bootstrap, Devise, Kaminari gem in Rails application

• Back-end:
  • Ruby 2.4
  • Rails 5.2.x
  • Database: Postgres 9.6
  • Gems: Devise, Kaminari, Bootstrap
• Front-end:
  • HTML, CSS, Javascript, jQuery
  • Bootstrap (3.x or 4.x)

• Part 1: medium.com/luanotes/build-instagram-by-ruby-on-rails-part-1
• Part 2: medium.com/luanotes/build-instagram-by-ruby-on-rails-part-2
• Part 3: medium.com/luanotes/build-instagram-by-ruby-on-rails-part-3