A cool tutorial by Gaston S. Garcia that can help you master painting inside the popular tool.
“In this tutorial, I share with you my main process on rendering/painting a mech concept. I discuss how I use the layer styles that I use to achieve a certain look,” states the description. “This process is pretty straightforward, so all you need is a little knowledge about Photoshop and little of the basics of digital painting and you’re good to go!”
Yea, there’s nothing too fancy about the tutorial, but the stuff shown in the guide is pretty much fundamental, so if you’re just making your first steps in digital painting, the tutorial can really help you get started.
You can learn more and get the pack for $3 here.