College is the only time in your life where you can get blackout drunk on a Wednesday without any real repercussions. It's four years where you can have fun and be slightly more irresponsible than you can be in real life. However, if you're doing college right, you should be balancing partying with your future and professional life. Here are a few things you can do now to seriously help you later.
Create a LinkedIn. It honestly blows my mind that the whole world doesn't have a LinkedIn--and a majority of my friends who are only a few months from graduation have yet to make one. It's pretty much an online resume that lets you stay connected with all of your professional contacts, helps you find jobs, and lets companies check you out for potential employment. While this isn't the end-all of your professional life, it is definitely something employers will expect you to have, use, and keep updated. Also don't use a pic of your dog for your profile photo.
Make business cards. I've literally had business cards since I was a sophomore in high school. Yes, I can see how that may seem a little ridiculous, but it's never hurt me to have them. You never know who you might meet and I find it much more professional to hand someone my card than hand them my email/number on a Starbucks napkin. Not to mention they make a great icing on the cake when handing someone your resume. It's kind of a silent way of saying you take yourself seriously, which goes a long way when making a first impression.
Start interning. If you have the ability to intern, do it. Don't wait until your senior year. Get your internships out of the way in college so you don't get stuck doing them post-graduation. The more experience you have the more of an asset you are going to be to a company. They'll be excited to see you have a base knowledge in the industry you're pursuing. Even better, they'll see that you're motivated enough to put yourself out there and take your future by the balls.
Visit your career services office. Now I sound like a college professor, but seriously, take advantage of the resources your school has to offer--they're in place for a reason. They can help you prepare for--and even search out--job opportunities you may not have had before. Don't wait until your senior year.
Make connections. I don't care if you're a freshman or a senior, networking should be a priority. Take the time to see who your family and friends know, talk to people on the phone, email with old bosses and see what connections they have in your industry. In an ideal world, you'd get hired for a job based solely on your merit, but the truth is knowing someone goes a long way.
Get paid for what you do. Being able to show a future employer that someone has already been interested enough in your work to pay for it will say a lot. It will show that not only are you motivated enough to hold a job, but that you're talented enough that someone wants you to do that job for them.