Students, if you’re considering an internship this (or in a future) summer, please consider reading these two posts.
This is one of mine, to help you decide if you should seek an internship.
And this is from the smart folks at Basecamp on what they learned while hiring their first batch of summer interns. I think the entire article is interesting, but students can scroll down to the “Tips for Prospective Interns” (just about all of which overlap with my advice for job seekers).