Photoshop is quite the behemoth application, and if you are new to working with it, it can be a bit overwhelming knowing where to start. If you are new to working with Photoshop and wondering how to get started, check out this fantastic video tutorial that will show you the first tools you should learn and how to use them to work on your photos.
Photoshop
One of the Most Unknown But Useful Tools in Lightroom

Lightroom has become quite an impressively capable editing program, able to tackle many advanced post-processing tasks that used to be reserved exclusively for Photoshop. As such, it can easy to overlook some of its tools. This excellent video tutorial will show you a lesser-known tool, what it does, and how to use it to create more precise edits.
How to Make Better Sky Selections in Photoshop

Since Lightroom and Photoshop introduced their automatic sky selections, changes to the sky in landscape and architecture photos have become very easy. But, how good are those automatic selections? If you edit photos for web representation alone, they are mostly good enough. But if you intend to print your photos, you might want to improve them, which is what I show in this article.
How to Use Content Aware Fill in Photoshop

Photoshop is full of a variety of tools, and there are many different ways to accomplish the same task, some more time-consuming than others. One of the most powerful time-saving tools out there is Content Aware Fill. This excellent video tutorial will show you how the tool works and how to get the most out of it to make better photos.
A New Astrophotography Plug-in and Some Thoughts on Topaz Plugins for Astro Work

For astrophotographers who use Photoshop, here’s some interesting and some good news. A just-released plug-in called APF-R (Absolute Point of Focus) can do wonders for your images. Astrophotographer Christoph Kaltseis has developed APF-R in order to achieve high-resolution, ultra-sharp images that still look natural. As astro-imagers know, trying to sharpen point sources like stars can result in ugly halos and other unwanted artifacts.