If you’re in WebDesign or interested in WebDesign Smashing Magazine is definitively the website you should check/bookmark and subscribe to their rss feed.
Everything you need to know is there.
And now they have concentrated the best knowledge of the industry into a wonderful book that, definitively, worth it’s price.
“The Smashing Book is a printed book about best practices in modern Web design. The book shares technical tips and best practices on coding, usability and optimization and explores how to create successful user interfaces and apply marketing principles to increase conversion rates. It also shows how to get the most out of typography, color and branding so that you end up with intuitive and effective Web designs. And lastly, you will also get a peek behind the curtains of Smashing Magazine.” (resource)