Landscape Legend Lightroom Presets - created specifically for landscapes and nature photos. 100 one-click presets plus extensive collection of workflow presets. This light room tutorial offers lots of help.
5 Easy Tips for Better Sunrise and Sunset Photographs
An interesting daytime long exposure photography tutorial by Alex Wise that covers the equipment needed for daytime long exposures, examples of how the effect works and a chart to help you calculate your long exposure photographs.