Adobe have recently released a new feature in Adobe Photoshop called Sky Replacement. This tool is designed, however rightly or wrongly, to help you replace the sky in an image.
If you haven’t learned Adobe Photoshop’s various ways to blend images then it can be useful but only to a point. What I’ve found is that it isn’t as all singing and all dancing as you might expect. That it’s still far better to put some time and effort into properly learning Adobe Photoshop.
For those of you who are interested in learning how to blend exposures then I created a tutorial showing several methods.