ADA Compliance Basics - Aria Labels, Color Contrast, Hover & Focus, Duplicate Link Text

Resources:

Google Web Fundamentals - Accessibility:
https://developers.google.com/web/fundamentals/accessibility/ 

W3C Web Content Accessibility Guide:
https://www.w3.org/WAI/standards-guidelines/wcag/ 

WebAIM Introduction to Web Accessibility:
https://webaim.org/intro/ 

Tools:

Axe Chrome Extension:
https://chrome.google.com/webstore/detail/axe/lhdoppojpmngadmnindnejefpokejbdd?hl=en-US 

WAVE Evaluation Tool Chrome Extension:
https://chrome.google.com/webstore/detail/wave-evaluation-tool/jbbplnpkjmmeebjpijfedlgcdilocofh?hl=en-US 

WebAIM Contrast Checker:
https://webaim.org/resources/contrastchecker/