An internship, paid or unpaid, can lead to full time employment. At the very least, it enhances your resume and provides some practical experience in your desired career field. Some online resources for locating internships are:
MonsterCollege
Create an account, then search for internships or jobs by location, job function, industry or keyword.
Internship Programs.com
This is a free resource that allows you to search by location or type of program.
