Here are some sites dealing with interior design -- including professional associations, and blogs - Explore Often!
Here are links to websites that have browseable catalogs from designers and vendors.
When looking at information online, consider the following criteria:
Currency - How timely is the information?Relevancy - Does it meet your information needs?Authority - What is the source of the information?Accuracy - Is the information correct?Purpose - Does the information teach, sell, entertain or persuade?