Your students may also find the following external tutorials and resources helpful. Note: This list is not regularly curated, so you should vet these yourself before relying on them. At the time they were added, they passed our vetting, but some of these have been on the list a long time!
Resource links that are highlighted are specifically recommended by the book’s authors.
Basic/Beginner Tutorials: Get started fast
HTML & CSS
Once you know the basics of HTML and CSS:
Deployment, dev/ops, performance
Cucumber & Capybara