I want to use my Mac Air to make a photo book from photos on my shared stream ,but I don't see a way to upload them. How can I do this?

First you have to import them to Photos (Right click on them in the shared Photo Stream and select import) and then drag to the Book Project in Photos

LN

I want to use my Mac Air to make one photo book from photos on a few different shared streams, but I don't see a way to upload them to the book . How can I do this?

Are the photos in the Shared albums photos you shared to the streams from your Mac or photos someone shared to you?

You can see that if you ctrl-click the photo in the Shared album. The contextual menu will either show "Import" or "Show in Moments".

• If it says "Import" you first need to import the photo by clicking "Import" as Larry described.
• If you are seeing "Show in Moment" instead, you can directly use the photo and drag it to the book project in the sidebar as explained by Larry. I prefer to reveal the photo in the moment with "Show in Moments" and drag from there. It will give you the better resolution version of the photo, since the photos in the shared albums may be reduced in pixel size and the metadata missing. I prefer to use the original versions I uploaded to the Shared albums, if they are in my Photos Library.