These sites have a good overview of Egyptian hieroglyphics. You can even learn to write in Egyptian:
http://www.omniglot.com/writing/egyptian.htm http://magma.nationalgeographic.com/ngm/egypt/translator.html - write your name in hieroglyphics http://www.ancientscripts.com/egyptian.html - the Egyptian system of hiereoglyphs explained http://www.friesian.com/egypt.htm - pronunciation of ancient Egyptian
You can read more about ancient civilizations including the the Roman Empire here.