Internships with public relations counseling firms, corporate departments or nonprofit organizations are extremely valuable for people still attending school. Professionally supervised, internships provide bona fide, hands-on public relations experience. Graduates with one or more such internships have an edge in the entry-level job market. No job is harder than finding a job, particularly your first. This is true of any field and certainly so of public relations.
Success requires planning, preparation, energy and enthusiasm.
Research the field in which you have the greatest interest. Not only should you use library resources, but also find people who work in these fields, particularly those engaged in public relations activities. Sometimes a journalist also can provide useful insights. The knowledge you acquire from all of these sources will confirm your interest in the field and will be evidence of your alertness and maturity. It's the vehicle you use to market yourself to potential employers and it should distinguish you from all other candidates.