Hi and welcome to the Forum,
I'm guessing you have made albums from the photos that you imported through the CCK. The photos in the albums are not actual duplicates they are more or less a shortcut to your original photo. This is just how the photo app is. Do a search and you will find out more info on this and the alternative ways for storing your photos.
The IPad Forum is a Community of members from all walks of life and from all over the world coming together to share our experiences and to help each other learn about this wonderful piece of technology the IPad.
There is a wealth of information already here in the many threads we have so doing some searches will answer most of the questions that you have. If then you can't find the answer you are seeking, then by all means post your question. You will find many friendly and informed members here only too willing to help you.
We also have our own App - Discussion Forum for IPad Users It is a very simple app to navigate.
Reading the iPad Manuals is a great place to start, so please download a copy of these http://www.support.apple.com/manuals/ipad/
A very informative thread from which you will learn many tips and shortcuts for the iPad
We have rules like any Community so please read these also
Once again we welcome you here and are so pleased you have joined us. Enjoy!!