Since previous graphic design related article turned out to be really popular, I decided to do similar article about web-design related resources. In this list You’ll find many free icons, psd files in good quality, Photoshop layer styles for easier icon creation and many websites specialized to deliver good quality freebie related content. You could say, it’s better to create icons Yourself, but I think there is no sense to create something that’s already there available for free, however if there isn’t something, this is only way to know it. Also yes, here is many *.psd files, so You have a chance also to see how really these icons are created and learn something. At least I think it’s worth bookmarking!
One more time, before You use these icons read licence terms and legal agreements.