3D Effect in Photoshop
You can learn to add 3D effects in flat design with this tutorial and with a little more efforts you can create stunning 3D Logo Design through playing with light and
dark colors. Here's an easy way.
Start off with a new document. Then select the Gradient Tool and select
a medium gray color as your foreground, and a dark gray color as your
background. Then select the Radial Gradient Tool from the options bar.
Make a gradient from the top left to to the bottom right like so:
Make a New Layer. Make your type or whatever you want. It doesn't matter
what color. This is mine:
Make a New Layer. Then make a selection around the layer with your type
(Ctrl+Click+Layer). Select a light gray color as your foreground color
and a medium gray color as your background color. Drag a gradient from
the top left of the type to the bottom right.
Now, select the gradient layer. Hold down Ctrl+Alt and nudge the selection
left five times. The Ctrl+Alt makes it that it would make a new layer
every nudge. When you're done, it should look like this:
5. Merge Layers
Merge all the layer copies, but leave the original layer, and then drag
the merged layer below the original. Then, go to Image>Adjustments>Brightness/Contrast.
Drag the contrast bar all the way to 0. Finally, go to Image>Adjustments>Hue/Saturation
(Ctrl+U). Drag the Lightness slider up until it's a dark gray. here's
what I mean:
6. Drop Shadow
Finally, select the newly lightened layer, and under the layers palette,
go to Blending Options. Check Drop Shadow, leave the default settings,
and you're done!
You can change the direction of light by adjusting where the gradient
starts. Try different things with this. Good luck =)