Did you apply some style layer or Outer Glow/Inner Glow and have not seen anything shiny on the screen even when you increase the size to 20 or 30 pixels? This is because the default setting of the Blend Mode for the Glow layer style is screen.
In many cases, depending on the content of the layers below the glow layer, …

Let Photoshop to do the calculations. In the dialog box image Size in Photoshop, there is a button that many users ignore. It’s called Auto and here is how it works; You indicate the desired image quality (Draft, Good, or Best) and Photoshop will make the calculations for the proper resolution of the image based on your selections.
So, here is …

This is a not-so-known shortcut that will save you a lot of time. When you open one of the frameworks of Preference Photoshop (General Preferences, Plug-ins & Scratch Disks, Units & Rulers, etc.), simply press Command-N (PC: Ctrl-N) and you’ll receive the next set of preferences in the current context dialogue. To go back to previous set of preferences, just …

The Tracking tool (the palette Character) defines the interval between your letters. A negative value brings them closer, while a positive moves them apart. If you work a lot with text you will be changing this value constantly, so it will be useful to have a quick way to reset it to zero on your selected text.
This is done simply …

When the Color Picker window is open click on the button Custom. The default is Rantone Solid Coated. However, Photoshop offers several color combinations. To select a different color pallet, click and hold the mouse over the Book pop-up menu and you will see a list of color combinations to choose what you want.