1. Use it- The first rule of having a good LinkedIn page is actually using your LinkedIn. So many people have an account for the sake of having one and never use it. Just because your college career counselor told you to make one, doesn't mean you just forget about it after you sign up. You should be checking constantly to see what job/internship openings have come out and just simply tweaking your profile every now and again.
Your LinkedIn is NOT your Facebook. That bikini picture you took in Cabo with your girlfriends will not work when you're trying to apply for an entry level job. If you're in college, find a student photographer on campus to take some headshots for you to post on your page. Or just simply have a friend take a nice picture of you (please, no cell phone selfies). Remember that first impressions are everything, so choose the photo that you feel shows your personality best.
on Facebook, so why aren't you creeping on LinkedIn? Creeping is totally allowed when checking out a LinkedIn page. If LinkedIn didn't want people to creep then they wouldn't have the option of seeing who has viewed your page. So why not take advantage and see what your peers and colleagues are doing? If you find yourself stuck and not knowing how to format your page, then check out the profiles of people who have the jobs that you want and see how they styled their page. Using someone else's page as a template for yours can be very helpful.
Let me know your bests LinkedIn tricks and tips in the comments!