To help out a bit for those who are wondering how to make use of this action set.
To install Photoshop actions
: First you go to your Actions Pallette in Photoshop > and click on the small button on the top right side > once the menu opens, click on Load Actions > select the downloaded action set file from your computer (RobsGrit.atn) and it will install. Once you open the RobsGrit Action Set Folder in the pallette by clicking on that name > select the specific action that you want to apply > click on Play at the bottom center of the actions pallette (presuming that you have an image file open)
With the Awesome Details
action - you can adjust the effect by playing with the Surface Blur settings being that the layer that it is applied to is a Smart Object. You can just double click on the word "Surface Blur" to adjust the sharpening to taste (yes Blur sharpens when the layer is inverted - cool heh).
The Dodge & Burn Layer
action applies a new layer mask that is filled with 50% gray. By setting your brush to a low Opacity or Flow (I prefer to use Flow) you can paint over the mask with white paint to dodge different areas, and black paint to burn in different areas. It is just a really really simply way to dodge and burn using a brush. Fast too as you learn to press Ctrl X to swap the color samples back and forth between black and white.
The Boost Contrast
action is actually a somewhat similar effect to Awesome Details - but there are no real controls to change with it.
The Boost Highlights
and Boost Shadows
actions are simply Curves Adjustment Layers. You can click on the layer and move the relevant curves section up and down to taste. I actually have a lot of actions such as these that I have recorded, which are just single steps that could be done without an action - - - but it is just so much quicker using an action and not having to remember the specific setting that I want to use.