My favorite links

Google (scholar section of google to find peer-reviewed articles)
Papers (search for conference papers and other works)
Articles (search for any published articles)
Amazon (# 1 bookseller on the internet)
Barnes and Noble (# 1 bookseller with actual stores)
Price comparisons
General (compares prices for any types of products)
Computers (compares prices for computer hardware and software)
Books (compares prices for new and used books)
Careers (finds jobs anywhere)
Riley Guide (advice on jobs along with job searching)