From the Manual

Saving Digital Memories

• Open a digital memory on your phone or your computer.
• Create a screenshot from your phone or computer.
• Save the screenshot and rename it in the naming convention you’ve committed to. 

Scanning Paper Memories

• Align paper memories on your scanner so that the edges of each document do not touch or travel of the edge of the scanner window.

Photographing Paper Memories

• Place each paper memory on a plain white sheet of paper.
• Position the paper near a window with natural light.
• Avoid any glares or reflections.
• Photograph the papers directly above the object to avoid perspective problems.
• Transfer the images to your computer and save and rename them.

Extracting the Memories

• Open an image (File > Open) containing a paper or digital memory.
• Get the Polygonal Lasso tool.
• In the Tool Options, click on the New Selection icon and set the Feather to 0 pixels. Anti-aliasing can be checked.
• On the image, click to place the beginning of the first segment in the corner of the document. 
• Continue clicking to create additional segments that outline the document.
• Make sure that the segments lie just inside the edge of the paper memory.
• Click on the beginning of the first segment to close the selection.
• Press Ctrl J (Mac: Cmd J) to copy the selected pixels to a new Layer.
• In the Layers panel, click and drag the Background layer to the trash.
• Save the image (File > Save As) as a PNG file with a unique name using the naming convention that you've committed to.

From the Transcript

Don’t let the paper pieces from your travels get lost in a box or drawer. Include them in your travel album. Paper memories, such as ticket stubs, are one of the essential parts of preserving travel memories. Some of your travel memories might actually be digital, such as a digital airline ticket. If you can bring it up on your phone or your computer, then you are golden. Simply create a screenshot from your phone or computer, and then save the screenshot and rename it in the naming convention you’ve committed to. I’ll show you what you can do with these screenshots in just a moment.

Most of your paper memories, however, will actually be paper. But that’s not a problem at all. Two easy solutions would be to either scan the papers or photograph them. If scanning paper memories, make sure to align them on your scanner so that the edges of each document do not touch. Also, try and make sure none of the documents travel off the edge of the scanner window.

If photographing, place each paper memory on a plain white sheet of paper, then position the paper near a window with natural light. Try to avoid any glares or reflections and make sure to photograph the papers directly above the object to avoid perspective problems. Once your captured images are transferred to the travel folder on your computer, open one of the images in Photoshop or Photoshop Elements.

In Expert Mode of Photoshop Elements or in Photoshop, get the Polygonal Lasso tool. It's nested with the other Lasso tools. Then in the Tool Options, click on the New Selection icon and set the Feather to 0 pixels. Anti-aliasing can be checked.

On the image, click to place the beginning of the first segment in the corner of the document. You want to make sure you're just inside the corner of the document, not off in the white area. Then continue clicking to create additional segments that outline the document. You'll want to make sure that the segments lie just inside the edge of that paper memory. When you get to the beginning of the segment, you'll see the little degree symbol next to the icon which indicates that you are going to close the selection. So when I click, the selection outline will appear. Once the selection is complete, press Ctrl J, Cmd J on a Mac, to copy the selected pixels to a new Layer. Then in the Layers panel, click and drag the Background layer to the trash. 

Now your paper memory can be saved as a PNG file to preserve those transparent pixels with a unique name using the naming convention that you've committed to. These paper memory files can be added anywhere within your template or you could utilize the last page of your book to compile them all into one design. So that's how you preserve your paper memories for your photo book.