Hyperfocal distance is one of the most convenient techniques in landscape photography, as it allows you to maximize the amount of your image that is in focus without resorting to more involved techniques such as focus stacking. If you do not want to deal with mental math or looking up values in a table, this great video will give you a quick and easy method for employing hyperfocal distance in your own work.
Coming to you from David Bergman with Adorama TV, this excellent video will show you a shortcut for approximating hyperfocal distance. Put simply: the hyperfocal distance is the focal distance at which depth of field is maximized. It is particularly useful for landscape photography, where you often want to have the majority of a scene in focus, but do not want to resort to something like focus stacking, which is both more time and resource intensive. It also helps you avoid stopping down to the point that you start losing sharpness due to diffraction, helping to ensure the best possible image quality. Check out the video above for the full rundown.
And if you want to continue your education in landscape photography, check out "Photographing The World 1: Landscape Photography and Post-Processing with Elia Locardi."