layers -2

The Layers panel in Photoshop lists all layers, layer groups, and layer effects in an image. You can use the Layers panel to show and hide layers, create new layers, and work with groups of layers. You can access additional commands and options in the Layers panel menu. The tools other tools are layer palette, layer lock, eye, paintbursh

Layers

Sometimes layers don’t contain any apparent content. For example, an adjustment layer holds color or tonal adjustments that affect the layers below it. Rather than edit image pixels directly, you can edit an adjustment layer and leave the underlying pixels unchanged.

A special type of layer, called a Smart Object, contains one or more layers of content. You can transform (scale, skew, or reshape) a Smart Object without directly editing image pixels. Or, you can edit the Smart Object as a separate image even after placing it in a Photoshop image. Smart Objects can also contain smart filter effects, which allow you to apply filters non-destructively to images so that you can later tweak or remove the filter effect.

painting tools -3

The Dodge tool and the Burn tool lighten or darken areas of the image. These tools are based on a traditional darkroom technique for regulating exposure on specific areas of a print. Photographers hold back light to lighten an area on the print (dodging) or increase the exposure to darken areas on a print (burning). The more you paint over an area with the Dodge or Burn tool, the lighter or darker it becomes.

Paintig tools -2

In the History panel, click in the far-left column of the state or snapshot that you want to use as the source for the Eraser tool with the Erase to History option. A brush icon appears to the left of the state’s listing in the History panel, indicating that Photoshop will use this state as the source for the Eraser tool with the Erase to History option.

Painting tools

About painting tools, presets, and options. Adobe Photoshop provides severaltools for painting and editing image color. The Brush tool and the Pencil tool work like traditional drawing tools applying color with brush strokes.

Drawing - 2

Understand shapes and paths. Drawing in Adobe Photoshop involves creating vector shapes and paths. In Photoshop, you can draw with any of the shape tools, the Pen tool, or the Freeform Pen tool. Options for each tool are available in the options bar.

Drawing

You can't create vector files with Photoshop. You can only create raster files with vector containers/edges. This means you may have a vector square and its edges will remain sharp and crisp, however if that square has a gradient fill. That gradient fill is raster entirely and it will suffer upon some scaling.