Few useful resources for all things usability.
How to conduct redesign?
A case study illustrates suggested steps to take during a redesign (link)
Essential Checks Before Launching Your Website
Use this checklist from Smashing Mag.(link)
How should startups conduct usability testing
Solid advice (from us) – link
Common Usability Challenges in Web Design
“Say what it does” – and more
Watch this Presentation
Interesting piece of data: