Photo import is the process of getting your photos from your camera to your computer. It also might be called downloading, uploading, ingestion, or simply copying your images.
You can connect your camera and download the photos that way. Or, you can remove the flash card from your camera and connect it to your camera and copy the photos directly. Many computers now have flash card slots so you can plug the camera flash card into the computer directly.
Most likely, your camera came with software for importing photos from the camera to your computer. Check your documentation if you have any questions about how to use this software.