usability - What is the significance of the Sign Up button on

So Facebook updated their login page. I couldn't help but wonder the reason behind having a Sign Up button in the header when there already is a Sign Up form in the body section. What aspect of UX

Signon, Signoff, and Registration :: UXmatters

The Usability Heuristics Explained

CTA Best Practices for UX & Accessibility (w/Examples) - Portent

A guide to BUTTON DESIGN & implementation

4 Design Patterns That Violate “Back” Button UX Expectations – 59% of Sites Get It Wrong – Articles – Baymard Institute

10 Tips to Improve Your Website's User Experience - Adoric Blog

Usability is important, even for an elevator : r/Design

A Complete Guide To Usability Testing

10 Essential Usability Heuristics You Need to Know

Sean's Legacy

5 Registration Form Usability Guidelines - Usability Geek

12 powerful tips for sign-up and login page design

How To Write A Usability Testing Report (with Templates and Examples)