Undo #Z
File New #N
Preferences #K
Deselect #D
File Save #S
100

The keyboard shortcut for Undo

What is Command-Z?

100

The menu bar location to create a new file

What is File>New?

100

The keyboard shortcut for Photoshop Preferences

What is Command-K?

100

The keyboard shortcut to deselect a selection (Make the marching ants go away!)

What is Command-D?

100

This Save setting determines where a file will be saved.

What is Location?

200

When using tools like Crop, Transform, and Text, you'll get stuck if you don't do this...

What is Double-Click / Crop / Apply the Transformation / Select Move Tool?

200

The size of a document, measured in width and height.

What are Document Dimensions / Image Size?

200

This would be the Preferences Section to use when changing the units of your Photoshop rulers.

What is Units & Rulers?

200

This tool makes edge selections easier than sticking magnets to your fridge.

What is Magnetic Lasso Tool?

200

The keyboard shortcut to Save As...

What is Shift-Command-S?

300

This non-destructive editing component lets you hide parts of an image layer, but you might also have to use the brush tool!

What is a Layer Mask?

300

These different settings are available for a new file (RGB, CMYK, Grayscale, Bitmap, etc)

What are Color Modes?

300

In the Guides, Grid, & Slices Preferences, the lines of Guides and Grid can be changed from normal to these two options.

What are Dashed/Dotted?

300

It's not from a fairy or a wizard, it's a Photoshop tool for making quick selections of uniform color!

What is the Magic Wand Tool?

300

These are the different file types that can be saved or exported from Photoshop, there are many!

What are Formats?

400

These non-destructive editing components apply to the layers that fall under them, but they can still be hidden and edited further without changing the layers underneath.

What are Adjustment Layers?

400

The clarity and image quality of a document, measured by the amount of pixels contained in the image.

What is Resolution?

400

In the Units & Rulers section, New Document Preset Resolutions for Print Resolution and Screen Resolution are able to be changed.  These are the preset values for each  Print: ____PPI and Screen: ____PPI

What are 300 & 72?

400

Tried and true, 90 degrees times 4, marching ants, you pick the size!

What is the Rectangular Marquee Tool?

400

Menu Bar location to find New, Save, Import, Export, Search, Open, Print, Place Embedded, Place Linked, Invite to Edit, File Info, and more!

What is the File Menu? (What is File?)

500

This Adjustment Layer will instantly create a photonegative effect. Reverse the colors!

What is Invert?

500

The different available measurements used in sizing documents (inches, pixels, etc.)

What are Units?

500

This Preferences Section contains File Saving Options (Like 'Automatically Save Recovery Information Every __ Minutes')

What is File Handling?

500

Find edit options like Content Aware Fill quickly by using this mouse-based magic trick inside a selection.

What is Right-Click? (Control-Select) 

500

One can do this type of destructive editing action to reduce the size of a saved filed by combining some or all of the layers.  Just make sure you're finished first!

What is Merge/Flatten Layers?