Yes, you should capture your books under the 'goods to follow' list. Just give them a nominal value under total, it doesn't have to be exact or accurate.
Yes, you will create columns in your 'goods accompanying' list, the list of things you are carrying on your flight. One column for electronics, like your cell phones, laptop, electronic games etc. Another column for your clothes, another column for your books and educational materials, another column for jewelry, state the value of costume jewelry and the value of the real jewelry. Each column will have it's own total then a grand total for the whole list of items. Simple.