Below are a number of sites that will help you as you learn about dinosaurs.
Enchanted Learning http://www.enchantedlearning.com/subjects/dinosaurs/
Dinosaur Floor - Meet the Dinosaurs http://www.cotf.edu/ete/modules/msese/dinosaurflr/meet.html
BBC- Dinosaurs http://news.bbc.co.uk/cbbcnews/hi/find_out/guides/animals/dinosaurs/newsid_1610000/1610405.stm
Dinosphere - Now You Are in There World http://www.childrensmuseum.org/dinosphere/kids/kids_activities.html
Dino Directory http://internt.nhm.ac.uk/jdsml/nature-online/dino-directory//nameAZ.dsml?disp=gall&Genusqtype=starts+with&sort=Genus&Genus=A
The Dinosauria http://www.ucmp.berkeley.edu/diapsids/dinosaur.html
Factmonster: Dinosaur http://www.factmonster.com/search?fr=fmtnh&query=dinosaur&x=25&y=10
DinoBuzz http://www.ucmp.berkeley.edu/diapsids/dinobuzz.html