John Jay has its own excellent Office of Career and Professional Development. This is not only a place where you find internships, get your resume critiqued and your job application letters reviewed, but also a place that organizes a constant stream of events and workshops that help students better to understand how to present themselves as job candidates for professional positions. They will cover all the relevant points, from how to learn to speak of your accomplishments and goals in a professional register, to how to follow the norms of professional attire, and how to learn from the experiences their guest speakers bring to their informational roundtables and presentations.
This office also organizes Career and Job Fairs, at which you get an opportunity to look at the variety of employers seeking to hire new graduates, consider their requirements and terms of employment, but also introduce yourself to the employer representative, share with them your current resume and try to leave a good impression. You can later use this experience to become a more comfortable job seeker and networker, but also to remind your contact person that you have formally met and that you are ready to submit your application for a particular job at their organization.
This is a video the Office provides in which the staff and students explain why networking matters and how to do it well: