Find an internship posting for which you are qualified.
You may use any job search site.. This is what you submit: The criteria for getting the internship (just copy and paste the information/list from the website), Then paste the link to the position description. Be sure you meet the criteria for the internship. (If you are a senior, find a job, not an internship.)
https://www.marketplace.org/2013/03/08/education/want-job-get-internship-first
http://www.careerbuilder.com/?ff=21
http://www.lib.uwaterloo.ca/society/employment.html
http://www.usajobs.gov/studentjobs/
http://college.monster.com/careers