The Photoshop Layers Palette
Each layer has its own visibility eye by the side of it, which can be used to either hide or show the layer in the image.
From the top of the palette, you can choose the Blending Mode for the active layer and control the layer’s Opacity.
The Trash Can at the bottom is used to delete the active layer, and the Add New Layer icon sits to its left.
The bisected circle icon enables you to add new Adjustment Layers, and the small rectangle with the white circle is clicked to add a Layer Mask.
Notice that the Palette displays both image layers and Layer Masks with thumbnails, which show their contents.
The Layers palette is a vital tool for organising, creating and managing layers.