While different genres place different levels of emphasis on getting sharp images, landscape photography generally demands a higher-than-average priority be placed on consistent sharpness. If you are working on becoming a better landscape photographer, check out this fantastic video tutorial that features an experienced creative sharing some helpful advice for getting sharp shots on a consistent basis.
Coming to you from Nigel Danson, this excellent video tutorial will give you useful advice for consistently taking sharp landscape photos. When it comes to sharpness across the entire scene, there is often a trade-off between the amount of effort you put in and the results you get. For example, many photographers prefer using the hyperfocal distance, as it can maximize depth of field in a single image, but those who want the absolute maximum level of sharpness will use focus stacking. Both methods are great, but no matter which you use, make sure all your fundamental technique is solid, including using a good tripod, a two-second timer or remote shutter release, and mirror lockup mode. And that being said, manual focus is the best choice when you have time to work. Check out the video above for the full rundown from Danson.
And if you really want to dive into landscape photography, check out "Photographing The World 1: Landscape Photography and Post-Processing with Elia Locardi."