While viewing the photos in your Gallery if you put your cursor on the photo you see a ♡ appear. Clicking on the the Heart will save that photo in a "Favorites Gallery" for you. That way you can go through all the photos in the Gallery and select the ones you like best to download or have printed. After you've done your selecting. Go to your Favorites Gallery.
In the upper left corner of the photo you will see “Menu” click on that and you will see an option to "Download" those photos to your computer.