College students who just can't wait for free shipping (or to trek out to a retail store) now can sign up for Amazon Prime, the service from Amazon.com that makes fast shipping virtually free.Simply click on over to Amazon's Student page and sign up; you'll need a current college enrollment (as verified by a ".edu" email address), and you'll need to list your current major as well."Amazon Student members get exclusive discounts on a variety of products and categories. Discounts and promotions will be e-mailed to your Amazon.com e-mail account or made available on the Amazon Student membership page," the site said.The real advantage is a year's free membership to Amazon Prime, a membership program that gives customers unlimited fast shipping, such as free two-day shipping and one-day shipping for $3.99 per item. It normally costs $79.99.