To help you understand what accessibility is and why it's important, here are some sources for you to look at!
Website
The Website Accessibility Initiative provides in-depth information regarding accessibility, its ethics, and how we can practice to provide accessibility in our daily lives.
Video
Clive Loseby's TED Talk about website accessibility talks about how important website accessibility is while providing relateable examples for viewers to engage.
Tool
WAVE is a tool that evaluates websites and points out accessibility errors. It helps authors make their web content more accessible to those with disabilities.
Website
As one of the top technology brands in the world, Apple works hard to provide accessibility features for all of its users. Here are all of their features on one website!