With revised checklist on setting up a new Rails app, including configuration of Travis (CI) and Coveralls (test coverage). Free PDF download

Resource links that are highlighted are specifically recommended by the book’s authors.

	Basic/Beginner Tutorials: Get started fast	Going Further	Reference/cheatsheets
Ruby	tryruby.org codecademy.com	rubymonk.com code school ruby-bits (starts free - later paid) codewars Ruby kata rubykoans.com	Ruby Style Guide Ruby cheat sheet
Rails	Michael Hartl Tutorial Bundler intro Bundler best practices Rails for Zombies (intro free)	Migrations cheat sheet Rails form helpers cheat sheet
HTML & CSS	Learn HTML (Mozilla Foundation). We recommend just doing the section on “HTML—Structuring the Web.” Bootstrap 4 in 30 Minutes (FreeCodeCamp) codecademy.com Learn HTML CodeAvengers HTML/CSS tutorial	Once you know the basics of HTML and CSS: Learn CSS (Mozilla Foundation) if you want to customize your CSS layouts CSS Diner: practice CSS interactively  in this whimsical environment (first 15 lessons or so should be enough) Mozilla Thimble is a full cloud-based HTML+CSS interactive authoring environment.	Mozilla Developer Network: HTML5 Bootstrap cheat sheet Document Object Model (DOM)  CSS
Deployment, dev/ops, performance		Google Web Fundamentals: towards fast, integrated, reliable, and engagin browser-based apps
Git, GitHub	The git-it interactive tutorial try.github.com GitHubGuides	GitImmersion Understanding Git Conceptually Udacity Git Course Git for Computer Scientists Git Magic (advanced)	Installing Git Pushing and Pulling An Illustrated Guide to Git on Windows Pro Git book
JavaScript	http://hsablonniere.github.io/ markleft/prezas/javascript-101.html#1.0  https://www.codecademy.com/ tracks/javascript  http://freecodecamp.com/	JavaScript, DOM event handlers https://developer.mozilla.org/en-US/docs/Web/JavaScript
Relational Databases	Free mini-courses (~30 mins each) from Stanford Database group: we recommend Intro to Relational Databases and Relational Algebra as a minimum Then learn a bit about SQL Queries, and you can then practice SQL queries interactively		SQLite3 command line
RSpec			http://rspec.info/ RSpec cheat sheet
Cucumber & Capybara			http://cukes.info/ LaunchAcademy Capybara cheatsheet

• Railscasts - focuses on Rails-specific development issues
• RailsLab - focuses on Rails-specific operations/dev-ops issues 
• BDDcasts specializes in BDD & Cucumber TeachMeToCode