Photoshop Lady is a nice site that has a good collection of photoshop tutorials from different sites.The tutorials are categorized into 3D Effect, Abstract Effect, Drawing Effect, Photo Effect, Text Effect, Texture & Patterns and User Interface Design.

On registering at the you can also group your favorites and the favorites are displayed to the left as thumbnails.

The registration process is simple give your preferred username and email id the the password will be mailed to you.