What is a Portfolio?
"A collection of information you design and create to help you present the best of yourself to other people."
From: Creating Your Career Portfolio, Anna Graf Williams, Ph.D. and Karen J. Hall, 1997 Prentice-Hall, Inc.
A Portfolio is also:
A place where you store those things related to your training, work experience, contributions, and special accomplishments. The place to document all your work-related talents and accomplishments so that you have a good sense of your "assets."