Step 1
Add new layer by selecting Layer>New>Layer, rename the layer using appropriate name. Then select the added layer using Rectangular Marquee Tool until you get like this...
Step 2
Fill the selected layer to any color you want. For this tutorial, I used white. Short key is ctrl + backspace.Step 3
Double click the layer, then the Laye Style window will open. Select Gradient Layer under blending option. Click to the gradient color, and choose any color that you want. For this tuto, I used red color...
Step 4
Insert new text, and type "Glossy Button". Then, open the layer style window again (double click the layer) and apply these settings (click on image to view the setting).
You new button will be like this...

Step 5
Add new layer to the top of text layer, Using Rectangular Marquee Tool, select the added layer, but make sure, don't select all, just half of the button.
Fill the selected area with white color and reduce the layer opacity to 57%.

The final image would be like this. Thank you.
