Move photos between ideabooks: Go to the ideabook which you want to move photos from, then click "Organize" button, select the photos you want to move, click "Move photos to ..." button. Now you will see a pop-up window and name the destination in the pop-up. Confirm.

Delete an ideabook:
From your ideabook, click the "Organize" button. Then click on the green "Delete ideabook" link near the top.

Thank you for your help! Got it.:)