A number of websites (some of which are associated with paralegal programs) contain good summaries of the duties that paralegals can expect to perform. Here are a couple of those summaries:
The NALA Professional Development Committee published a compilation of job descriptions in a former Career Chronicle edition of Facts & Findings. If you are looking for a variety of job descriptions, this is a great start.
Bureau of Labor Statistics, U.S. Department of Labor, Occupational Outlook Handbook, 2016-17 Edition, Paralegals and Legal Assistants, on the Internet.
The Legal Studies Association (LSA), a student organization at Florida State College at Jacksonville, is dedicated to the growth and advancement of the legal studies student in the legal field and community.
NALA is the leading paralegal association in the U.S. Its mission is to provide continuing education and professional development programs to all paralegals.
Founded in 1974, NFPA was the first Created as a non-profit federation, NFPA is an issues-driven, policy-oriented professional association directed by its membership.