how to resort results of a query

Hi, How can I set things up so that a user can resort the results of a query? Also, how can I make certain columns into links? I'm making a site that will list college courses. When users decide to browse listings by discipline, or college, I'd like the titles of the courses to be links to fuller descriptions of those courses. But I'm not sure how to do that. thanks in advance for your help. best, Matt