Windows

On Windows, you can take a screenshot using a keyboard shortcut in the following ways.

1. Press the Print Screen (PrtScn) button. This will take a screenshot of your entire screen and store it in your clipboard. You can then paste the screenshot in an application by right-clicking and selecting Paste or by pressing Ctrl+V on your keyboard.
2. Press Alt+PrtScn. This will take a screenshot of the active window on your screen and store it in your clipboard. Like above, you can paste it into any application as needed.
3. Press Win+Shift+S. This will open the snip and sketch tool and allow you to drag a shape to take a screenshot. Like the above options, the screenshot will be stored in your clipboard and can be pasted into other applications as needed.
4. Press Win+PrtScn. This will take a screenshot of your entire screen and save the screenshot in your Pictures folder. Look for a subfolder called Screenshots to see screenshots taken in this manner.

Mac

On Mac, you can take a screenshot using a keyboard shortcut in the following ways.

1. Press Shift+Command+3. This will take a screenshot of your entire screen and open the screenshot in Preview. From there, you can edit and save the screenshot as needed.
2. Press Shift+Command+4. This will allow you to capture a portion of your screen and open the portion in Preview. From there, you can edit and save the screenshot as needed.
3. Press Control+Shift+Command+3. This will take a screenshot of your entire screen and save it to your clipboard. You can then paste the screenshot in an application by right-clicking or two-finger-clicking and select Paste or by pressing Command+V on your keyboard.
4. Press Control+Shift+Command+4. This will allow you to capture a portion of your screen and save it to your clipboard. Like Option 3, the screenshot will be stored in your clipboard and can be pasted into other applications as needed.