How to Use Photoshop for Mac (14 Steps)

Open Adobe Photoshop. Go to Photoshop Menu > Preferences > Display and Cursors. Set your Painting Cursors to 'Brush Size' and your Other Cursors to 'Standard'. This makes it easier to see the exact size of the brush you're using. Click 'OK'.
Familiarize yourself with the tool palette. If you move your cursor over each tool, it will bring up the name of the tool and the letter key to type to quickly access that tool.
Open the photo you'd like to edit by holding down the command key and pressing the 'o' key. On Apple keyboards, this key has an Apple logo on it that may not be present on third-party keyboards. Select your image and then click 'Open'.
Type 'z' to select the Zoom tool. Click and drag the dotted marquee around the area you want to zoom in on. In this case, we're going to remove the unwanted highlights in the dog's eyes.
Type 'w' to select the Wand Tool. Select the area(s) where you want to change the color. To select more than one area, hold down the shift key. Go to the Select menu and choose 'Feather'. Type in a value of 1 where it says 'pixels'.
Type 'i' to select the Eyedropper tool. Click on the area of color you want to match. Hold down the option key and press 'delete' to fill that area. Type 'command-d' to deselect.
You have to clone part of the image around the new fill to match her eyes. Type 's' to select the Clone Stamp Tool. Use the left and right bracket keys to adjust the size of your brush. Hold the option key and click on the area you want to sample. Click and hold to paint the area you wish to clone over.
Type 'command-0 (zero)' to undo the zoom. Type 'c' to select the Crop tool and bring up its options. Type '5' in the Width field and type in '7 in' the Height field. Set the Resolution drop down menu to' Pixels/Inch'. Type '300' in the Resolution field.
Click and drag around the area of the photo you want to keep. If you need to, click in the center of the dotted lines to move the box. The lighter parts of the image will remain, and the darker parts are discarded. Press the return key.This gives you a nice size image for printing and framing.
Go to Image Menu > Adjustments > Brightness and Contrast.
Adjust the sliders until the color is pleasing to your eye. Click 'OK'.
Type 'command-s' to save the photo or go to File menu > Save As... if you want to save it under a different name, or in a different location. Congratulations, you've just professionally edited your first photograph.
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How to Troubleshoot an Apple Computer Full Screen Display

Check the resolution of the screen. If things are just looking funny and out of proportion, then you have either accidentally zoomed in on your screen or changed the resolution. To change the resolution, click the Apple icon at the top left part of the menu bar, then 'System Preferences' and then click on the Display icon. There you can change the displays to find the one that you want to go back to. If the display and resolution settings do not work, try holding Command and swipe downward on the track pad. This should zoom out from your screen to the standard resolution and setting.
If you're using a laptop, connect to a power source. If your computer does not show any picture on the display, then you may be near the end of your battery life. See if restarting your computer helps. Hold the power button and the 'Control' and 'Command' keys simultaneously for several seconds.
Reset the PRAM, which is done by pressing the power button to turn the computer on and then immediately pressing 'Command,' 'Option,' 'P,' and 'R' until you have cycled through three start-up chimes. Resetting the PRAM is useful for any type of troubleshooting because it resets your computer to the original factory settings. This is often one of the first troubleshooting techniques that Apple certified maintenance technicians will try on a computer.
Reset the SMC for laptops by removing the power supply, removing the battery, and then holding the power button for five seconds. This is an additional option that resets your computer. If it still does not work and your computer does not properly show your display screen or if it does not boot up at all then you may have a more serious issue.
Consult your owner's manual for further tests that you can undertake such as the hard-drive test or checking the hardware and software of the computer through a Disk Utility check, which is done by utilizing the installation disks.
Call the Apple Service hotline or schedule an appointment at the nearest Apple retail store or an authorized service provider. The number for Apple support is (800) 275-2273. Or go to Apple's website (then link is included in Resources).
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How to Unzoom My Desktop on a Mac

Press 'CTRL.'
Place a finger on the scroll wheel of your mouse.
Scroll the wheel backward to decrease the zoom of your desktop.
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