Here are some of my favourite websites:

 

 

Petapixel

A source of current events, news, tutorials, inspiration in photography. Updated daily.

Digital Photography Resource Guide

A great collection of digital photography links.

FStoppers

A source of current events, news, tutorials, inspiration in photography. Updated daily.

Lightroom Killer Tips

Self-evident. I consider Adobe Lightroom an essential tool.

Thom Hogan

Nikon-centric product reviews and market analysis.

Digital Photography Review

New product reviews.

DCViews

New product reviews.

PhotoMatters

This is a great site for beginners and intermediates. It illustrates and explains numerous photo settings and techniques. It "explores the creative variables of photography, one at a time, to see how each works".