A pretty decent article on the origins and folklore behind Halloween:
http://www.loc.gov/folklife/halloween.html
Still need some ideas for carving that pumpkin? Here are some, many with free downloadable instructions:
http://www.southernliving.com/food/holidays-occasions/halloween-pumpkins
And here are some Halloween food and party ideas from Food Network (try to ignore the big picture of Sandra Lee in the middle):
http://www.foodnetwork.com/holidays-and-parties/packages/halloween.html
Last, if you want to find some (supposedly) real haunted houses, you might start here:
Happy Halloween!