Understanding the Difference Between CI and CD
Continuous Integration, Continuous Delivery, and Continuous Deployment all mean different things and none of them is tied to a specific tool. You could use custom scripts for all of it. They are just processes and that is what the author is trying to convey. Instead of explaining them in terms of a tool he explains them in terms of how things were done and then how they are done with CI or CD.

Web Design Museum
What do you say to a stroll through the past? Websites didn’t always look like they do now. For example, take a look at CNN’s site when they launched

Nutrition Cards for Accessible Components A11Y Expectations
For users with accessibility requirements, there are standards that your application is expected to follow. This website has gone through the WAI-ARIA Authoring Practices Guide and created something like a recipe for what different components should be able to do and how they should behave. It’s a handy quick reference to have.

Digital Psychology
This site runs through some of the most common psychological techniques you’ll see in user experience and in marketing. Each category references at least a few studies that focused on the principle.