Composition is one of the trickiest aspects of landscape photography, but once you feel comfortable with it, the next step to really taking control of your images is color theory. This helpful video tutorial will introduce you to color theory, including several topics and how to see and apply them to create more compelling landscape photos.
Coming to you from Mike Smith, this awesome video tutorial will introduce you to color theory for landscape images. Color theory is a powerful but underutilized tool that holds a lot of potential for creating compelling and visually arresting images. We often think about things like complementary colors, but there are many more options, such as monochromatic, split complementary, analogous, and much more, and understanding all these approaches will help you to better read a scene, choose the appropriate application for what is available and what you wish to convey, and create a more precisely crafted and direct photo. It's particularly useful for creating sets of images with a cohesize unifying element. Check out the video above for the full rundown from Smith.
And if you really want to dive into landscape photography, check out "Photographing The World 1: Landscape Photography and Post-Processing with Elia Locardi."