Usability Resources for More Sales.
I have been doing more research into usability lately for a talk / workshop I have been giving. In the process I have assembled a collection of links that you will definitely find useful if you are running a website.
Books

How To Make Any Web Site Better.
A really easy short book ideal for anyone starting out. Its presentation is simple, a big screen shot of a website on one page and a few lines of text on the opposite page about what works and what doesn’t.
Don’t Make Me Think – Steve Krug
This is the must read book for anyone serious about web usability.
Check out the video below for a better idea of the man and the topic.
Landing Page Optimization – Tim Ash
The Definitive Guide to Testing and Tuning for Website Conversions by Tim Ash.
Websites
The $300,000,000 Button
eConsultancy Tips
Marketing Experiments
Google Website Optimizer
I Am A Landing Page Designer
A Collection of Form Designs
Podcasts

A weekly radio show from Tim Ash (book above) on Webmaster Radio. Tips from the most prominent experts in the industry on how to improve your landing pages and conversion on your site.
iTunes link here.
Video
Steve Krug on the least you can do about usability
Usability testing is important, but you’ve got other things to do. In this video, Steve talks about informal usability testing and how the minimum of work can give you extraordinary results.
Joel Spolsky
Joel talks about how to become number one. You have clean code, usable software and decent marketing. But how do you get to the next level? Joel talks about three things you must do to go from average to awesome.
Any resources or links you can suggest? Let me know in the comments.