Adobe Photoshop CC 2019 is the core image processing software in the Adobe Creative Cloud suite, and with its powerful raster editing, compositing, and design capabilities, it has become the standard tool for professional photographers, designers, and digital artists. This guide will explain in detail its interface, core workflows, and operating techniques.

I. Detailed Explanation of the Core Interface and Workspace

After launching Photoshop CC 2019, you will see an integrated interface composed of multiple panels and workspace groups. Understanding its layout is the foundation for efficient work.

Menu Bar: Located at the top of the screen, it contains all major command categories such as “File,” “Edit,” “Image,” and “Layer.”
Options Bar: Directly below the menu bar, its content changes dynamically according to the currently selected tool and is used to adjust the specific parameters of the tool.
Tools Panel: By default located on the left side of the interface, it brings together all editing tools such as selection, cropping, brush, stamp, and type. Tool icons with a small triangle in the lower right corner indicate hidden tools, which can be expanded by long-pressing or right-clicking.
Document Window: The central area, displaying the image file currently being edited. Each opened file appears as a tab.
Panels: By default stacked on the right side of the interface, for example:
- Layers Panel: Manages all layers, groups, and layer effects in the document and is the core of compositing.
- Color/Swatches Panel: Used to select and store colors.
- Adjustments Panel: Provides quick access to non-destructive image adjustment commands (such as Curves, Hue/Saturation).
- History Panel: Records operation steps, allowing you to revert to a previous state.
Workspace Switcher: Located in the upper right corner, it provides preset interface layouts such as “Photography,” “Painting,” and “Typography,” allowing you to quickly switch panel configurations to suit different tasks.

II. Complete Workflow from Creation to Export

The following uses a simple poster design as an example to demonstrate the standard workflow from scratch to final output.

Step 1: Create a New Project

Method: After launching the software, click the menu bar “File” > “New”, or use the shortcut Cmd + N.

Detailed Operation: In the pop-up “New Document” dialog box, you can:

Select a size template from the presets at the top (Photo, Print, Web, etc.).
Manually enter the width, height (units such as pixels, centimeters), resolution (300ppi is commonly used for printing, 72ppi for web), and color mode (RGB for screen, CMYK for printing).
Click the “Create” button to generate a new blank document window.

Step 2: Insert and Edit Assets

Method: Add the background image and Logo assets to the document.

Insert a Smart Object: Click the menu bar “File” > “Place Embedded”. Select your background image file and click “Place.” The image will appear on the canvas as a Smart Object with a transform box. You can drag the corners to resize it (hold the Shift key to scale proportionally), and press Enter to confirm placement. The advantage of Smart Objects is that they can be scaled repeatedly without loss.
Use the Type Tool: Select the “Type Tool (T)” from the left toolbar, and click on the canvas to enter text. In the right options bar, you can change the font, size, and color. After entering the text, you can click another tool in the toolbar or press Cmd + Enter to confirm.
Layer Operations: All placed assets and created text will generate independent layers in the “Layers Panel.” You can drag layers up or down to change the stacking order. Click the “eye” icon in front of a layer to hide/show that layer.

Step 3: Image Adjustment and Compositing

Method: Color-grade the background image and add effects to the text.

Non-destructive adjustments: At the bottom of the Layers panel, click the “Create new fill or adjustment layer” icon (a half-black, half-white circle), and choose “Curves” or “Hue/Saturation.” The corresponding controls will appear in the adjustments panel, and the effect will be applied to all layers below, and you can double-click the adjustment layer icon at any time to modify it.
Add layer styles: In the Layers panel, double-click a text layer (not the name area) to open the “Layer Style” dialog box. Here you can add effects such as drop shadow, stroke, and gradient overlay. All effects are non-destructive and can be edited or turned off at any time.
Use masks for compositing: Select a layer and click the “Add layer mask” icon at the bottom of the Layers panel (a rectangle with a circle in the middle). In a mask, black means hidden and white means visible. Select the Brush tool (B), set the foreground color to black, and paint on the image to erase part of the content (in fact, hide it), while the original image remains undamaged.

Step 4: Save and export

Method: Save the project file or export the finished image according to your needs.

Save the project file (PSD): Click the menu bar “File” > “Save As”, or use Cmd + Shift + S. In Format, choose “Photoshop (*.PSD).” The PSD format preserves all layers, effects, and editing history, making it easy to modify later.
Export for Web: Click the menu bar “File” > “Export” > “Save for Web (Legacy)”, or use Cmd + Opt + Shift + S. In the dialog that appears, you can choose the format (such as JPEG, PNG-24, PNG-8), adjust image quality and size, and preview the result and file size on the right.
Quick Export as PNG: Right-click the target layer or group in the Layers panel and choose “Quick Export as PNG” to quickly generate an image with a transparent background.

III. Advanced Tips for Common Features

Content-Aware Fill: Use the Lasso tool (L) to roughly select the object you want to remove, press Shift + F5, choose “Content-Aware” in the dialog box, and click OK. Photoshop will automatically fill the selection with surrounding content, which is very suitable for removing blemishes.
Quick Selection and Masks: Use the “Quick Selection Tool (W)” to paint roughly over the object to make an initial selection, then click the “Select and Mask” button in the options bar to enter the interface for refining and adjusting edges (such as hair and semi-transparent objects).
Smart Objects and Filters: Convert the layer into a Smart Object (right-click the layer > “Convert to Smart Object”), then apply filters (menu bar “Filter” > “Blur” > “Gaussian Blur”, etc.). The filter will appear as a “Smart Filter”, and you can double-click at any time to modify the parameters or turn it off without damaging the original image.
Clipping Mask: Place the image layer above the shape or text layer, hold the Opt key, move the mouse to the boundary line between the two layers, and click when a downward arrow appears. The content of the upper layer will only be displayed within the shape area of the lower layer.

IV. Common Problems and Solutions

Problem 1: The toolbar or panels are missing
Solution: Click the menu bar “Window”, find the missing panel name in the drop-down menu (such as “Layers”, “Color”), and click to check it so it displays. To restore the default layout, click “Window” > “Workspace” > “Reset [Essentials]”.
Problem 2: Operation error, how to undo
Solution: To undo a single step, press Cmd + Z. To undo multiple steps gradually, press Cmd + Opt + Z. To jump to any step in the history, open the “History” panel and click directly.
Problem 3: The brush/tool cursor is missing or has become a crosshair
Solution: Press the Caps Lock key to switch between the standard tool cursor and the precise crosshair cursor. If the cursor does not display at all, please check the menu bar “Photoshop” > “Preferences” > “Cursors”, and make sure “Normal Brush Tip” or another visible option is set.
Issue 4: “Insufficient Memory (RAM)” prompt when saving
Solution: First, try closing other large applications. Next, you can free up the memory used by Photoshop: click the menu bar “Edit” > “Purge” > “All”. The long-term solution is to go to “Photoshop” > “Preferences” > “Performance”, increase the allocation ratio under “Memory Usage,” and make sure there is enough scratch disk space available.

V. Summary of Core Keyboard Shortcuts for Photoshop CC 2019 for Mac

Function Category	Action	Shortcut (Mac)
File Operations	New Document	Cmd + N
Open Document	Cmd + O
Save	Cmd + S
Save As	Cmd + Shift + S
Save for Web	Cmd + Opt + Shift + S
Editing Operations	Undo	Cmd + Z
Step Backward (Multiple Undo)	Cmd + Opt + Z
Cut	Cmd + X
Paste	Cmd + V
Selection & Transformation	Select All	Cmd + A
Deselect	Cmd + D
Inverse Selection	Cmd + Shift + I
Free Transform	Cmd + T
Content-Aware Fill	Shift + F5
Merge Copy (Copy All Visible Layers)	Cmd + Shift + C
Layer Operations	New Layer	Cmd + Shift + N
Layer via Copy	Cmd + J
Merge Visible Layers	Cmd + Shift + E
Merge Down	Cmd + E
Group	Cmd + G
View Controls	Zoom In	Cmd + + (plus sign)
Zoom Out	Cmd + – (minus sign)
Fit on Screen	Cmd + 0
100% Actual Pixels	Cmd + 1
Tool Switching	Move Tool	V
Brush Tool	B
Eraser Tool	E

Note: The above guide is based on Adobe Photoshop CC 2019 for Mac. Minor differences in interface and features may exist between different minor versions, but the core logic remains the same. Once you have mastered the basic operations, you can further explore advanced features such as 3D, the video timeline, and Camera Raw filters.