Research schools using guidebooks, college websites, and college search sites 

Plan to visit colleges. There is nothing like an actual campus visit to get a feel if it is the right one for you.

Have a balanced list - include 2-3 schools that you have a high chance of admission, 2-4 target schools that fit your profile and 1-2 schools that are a reach.

For a specialized major or field of study, consult an education consultant to obtain additional information.