Click on the 'Upload Images' link under the 'Images' heading in the Control Panel menu.
Then, click on the 'Browse' button to select image files for upload. Navigate to the folder on your computer where the book images are stored. You can select up to 100 images at a time for uploading.
After selecting the files, click the 'Upload' button to upload to your website.
To select multiple adjacent files hold down the Shift key while clicking the first and last image. All images in between will also be selected.
To select multiple images that are not adjacent, hold down the Ctrl key while clicking each image.