Each atom in the periodic table is unique and has an unique atomic number which indicates the number of protons that it has.
Scientific American has an periodic table that contains fun facts about each of the elements.
Another place to get info about the periodic table of element is WebElements. If you need more detailed info about the element, find it on Wikipedia.
University-Review.ca has a nice pictorial chart of the elements. If you have to remember all the elements for school, the pictures help you remember.