A professional portfolio provides a complete picture of an individual by displaying their experiences, accomplishments, skills, education, interests, and professional goals and objectives. There are two main types of professional portfolios - digital and hard-copy. A professional portfolio typically includes sections for experience, education, skills, and projects/volunteer work, and contains documents like resumes, reference letters, diplomas, transcripts, writing samples, awards, and evaluations. Maintaining an up-to-date professional portfolio is important for networking and career development.