To import photos from your iPhone to your computer, you need to have iTunes and a USB cable for your phone.

Open iTunes, connect your phone, unlock your phone, wait for it to initialize and pop-up a message on your phone to trust the computer. Click trust on the iPhone.

Click the Start button on your computer and type in Photos, then select the Photos app.

Click on the Import button (make sure your phone is unlocked) and then select the pictures you want to import and the folder you want to send them to.

Towards the bottom of the screen you can choose to delete the pictures from your phone after you import them.