I found these tips whilst looking for photoshop brushes to download and thought it might be useful.
15 Photoshop Tips that you may not have known
5. Select Alternative Layers:
Now, I am sure you might know that selecting a layer and then clicking on some other layer whilst holding down Shift Key selects all the consecutive layers between them, BUT if you just want to select say Layer 1 and Layer 3 and maybe just Layer 6, then just hold down Ctrl key and click on the layer which you want to select in the Layer Palette, this way only the alternative layers (i.e only the layers that you want) will be selected.
6. See The Text Color:
When you’re working with type, the obvious way to change color is to highlight the text and then pick a new hue by double-clicking the Foreground Color and choosing from the Color Picker. But the problem with this method is, because the text is highlighted, you can’t see the color change. To get around this, click the color square in the Options Bar. As you change the color, you’ll see the type alter accordingly.
Note:Remember that your layer should not be locked.
Hold down Alt key and notice how the cursor changes into Scissor icon allowing you to delete a swatch.
Same is true for Brush, Style Palette etc.
Also, you can transform a Selection by choosing Select>Transform Selection.