Begin thinking about college as the beginning of your career, because your attitude about school will set the pattern for the rest of your career development. Your advisor should become your strongest ally. Stick with the core courses that will be required regardless of the major chosen. Don't be afraid to choose a tentative major.
Most people change majors at least once.
Obtain your own copy of the academic catalog. The university will produce a catalog every year, but the one you start with is the one you'll graduate under. Read your handbook cover to cover and keep it handy. Begin to think about possible career choices. Don't be a stranger to faculty, staff and administrators.