Well it's gonna be hard to get a summer job cause.......you're not the only one looking for one.
My advice would be research job openings, fill out a bunch of applications for every place that you qualify for and turn all your applications in. Then if you get call backs go in and do the interview.......also if there is a place you especially want to work for then go in personally and ask to talk to the Manager.
Best Of Luck. :3