It's easy to import your new photos into the Photos App on your Mac.
Option 1: The Import Menu
You can use the file-menu-import option to access any image files contained within your macOS. This may include folders, external hard drives, mounted memory cards, etc.
Option 2: Drag & Drop
If you want to import image files from your finder, desktop, or downloads, simply select, drag and drop them into the Photos icon on the OS X Dock.
Option 3: Import Images to an Existing or New Photos Album
Easily import photos into an album by dragging and dropping selected photos.
- Select the ‘Albums’ tab and open the album of choice (or create a new album by clicking the + plus button).
- Then just drag and drop photos into the album.