I don't regret purchasing this book. This book covers some great content while guiding you through the pages. I find it futile to continue development without having some knowledge of design and usability of a site.
Before I read this, I assumed that every user was just like myself. Come to find out, I assumed a lot of things about the users that visited my sites - I was totally wrong.
After you read this book, you will notice certain things about sites, while you create webpages you will have a voice in the back of your head concurrently guiding every key stroke to deliver a page that is built the way you want it but also the way potential users would want it.
Click the link and checkout some of the reviews and details about the book as mine does not do justice.