Fill out the job you are looking for and you will get listings in your email box regularly from the sites below. I’ve had students who’ve had success with all of the sites below.

http://www.internships.com

https://www.indeed.com

https://www.ziprecruiter.com

https://www.wayup.com

Media bistro is a good site for media related job postings.

https://www.mediabistro.com

The Muse is an interesting site with a fun career guide to Linked in

https://www.themuse.com/advice/the-star-wars-guide-to-networking-on-linkedin

One of the best know online sites for internship listings, internships.com also has good resume tips and career advice.

http://www.internships.com/student

Intern Queen is a site that can be useful for landing an internship.

http://www.internqueen.com

Intern feed is a another spot to look for internships

https://internfeed.co/

My edu has job listings that you can review.

https://www.myedu.com

If you are interested in a non for profit job, then this is the site for you to review to search for job postings.

http://www.idealist.org

This site has many internship postings and also interview tips, etc. for landing the internship after you get the call for an interview.

http://www.experience.com/entry-level-jobs/internships

If you are the entrepreneurial type, then try angel list which has jobs at startups. Might not be any paid spots here, but you will get some strong hands on experience:

https://angel.co/