You can find links to advising services in each of the colleges here: http://www.unl.edu/current/advising/. Students can find their individual advisor through the MyPLAN tab in their My.UNL.edu (Blackboard) portal. Registration opens for each student based upon his or her year in school, and your student can find out when they can begin registering by checking their MyRED account.
More details at: http://www.unl.edu/current/advising/