Mark O'Brien wrote a great easy read on this exact topic, it's called "A Website that Works" - http://www.newfangled.com/a_website_that_works

This is the philosophy that Newfangled is built upon, so let me know if you're ever interested in partnering with us for consulting or development. Good luck!

I'd recommend a link not a book - http://goodui.org/

Creating websites that get good business results is not easy and takes a lot of thought and effort. If it's done well, then it appears effortless. I recommend this book, as it helped me immeasurably in making RentACoder.com and vWorker.com highly profitable: "Don't make me think:"
http://www.amazon.com/Dont-Make-Me-Think-Usability/dp/0321344758/ref=sr_1_2/190-9767452-5734600?ie=UTF8&qid=1384196211&sr=8-2&keywords=book+don%27t+make+me+think

I've read a great book about this subject. However, it's only available in Dutch... Still, I wanted to share it with the Dutch readers among us.

Verleiden op internet - Hoe maak je een website onweerstaanbaar?
http://www.managementboek.nl/boek/9789089650726/verleiden-op-internet-aartjan-van-erkel