Start the Rails server to view your new project's default home page in the browser at localhost:3000. This confirms Rails is installed and running with the Puma server.

Learn to set the root route to the home page by editing config/routes.rb, replacing get 'home#index' with root 'home#index' and commenting out the old route.

Learn how to create an about page manually in Rails by defining an about method in the home controller, adding the about view, and configuring the route.

Master robust error handling by testing for gibberish inputs, distinguishing nil results, and displaying precise errors like 'stock symbol doesn't exist please try again' on the index page.

Create the devise user model and migrate the database in rails to add a users table with email, encrypted password, and tokens, then review the generated schema and routes.

Learn to bootstrap forms in Rails apps by wrapping inputs in form-group, applying form-control, and styling login, signup, and password pages with Bootstrap components like jumbotron and grid layout.

Learn how to connect stocks and users in rails using active record associations, defining has_many and belongs_to, updating models, and addressing scaffolding quirks for clean associations.

This lecture demonstrates adding stocks navigation links in a Rails app and explains CRUD—create, read, update, destroy—as a full scaffolded system for managing stocks.

Enable creation of stocks for the current user by using the current_user helper to populate the user_id, hide the field, and show only the logged-in user's tickers.

Discover how to filter the stocks index to show only the current user's stocks by comparing stock.user_id with current_user.id, and present show, edit, and destroy links.

Connect the stock table to quote data and style the index page with Bootstrap table classes, showing company name, ticker, current price, and market cap.