These are notes on the Adobe video. Much of the content of this video is described in the writeup about Chapter 1 of the text and is generally not repeated in this writeup.
If you want to open more than one file at a time, when you do File > Open and select a file, you can control-click to select additional files so that a single open command will open multiple files. At the top of the document window, there is a tab for each open file, and the tab tells you the name of the file.
To create a new file, select File > New. Photoshop comes with several document presets. You first select from a category of documents at the top (Photo, Print, Art & Illustration, Web, Mobile, and Film & Video). Once you have made this selection, there will be presets for that category. These presets have height, width, resolution, color mode, background, etc. specified, but you can change these in the panel on the right.
Panels are displayed on the right side of Photoshop. If you click on Window in the menu, an alphabetical list of panels will be displayed and those that are open will have a checkmark next to the name. You can close a panel by clicking the double-header arrow at the top right of the panel or by clicking the checkmark in the alphabetical list of panels.
Each tool has a set of options, that will be displayed in the options bar (at the top, right below the menu) after you click on the tool.
You can move to a different section of the document by panning, using the Hand Tool (whch looks like a hand).
If you have selected the zoom tool, you can do continuous zooming by clicking and holding in the image rather than just clicking once. You can zoom in by Ctrl and the + key at the same time, and zoom out by Ctrl and the - key at the same time.
To undo, Ctrl Z; to redo, press Shftt-Ctrl Z again. You can also do this on the menu by selecting Edit. Another way to go back in steps is to select a step in the History panel. The steps in the History panel will go away once you exit Photoshop. By default, selecting a state and then changing the image eliminates all states that come after it. However, choosing the Allow Non-Linear Option, provides some flexibility here - see https://helpx.adobe.com/photoshop/using/undo-history.html
Revised: April 5, 2023. Comments to Bill Pegram, wpegram@nvcc.edu