You just started college -- hooray!

Between purchasing books, dealing with student loans and going out with your friends, we understand if you feel like your wallet is crying.

That's why ABC News' Rebecca Jarvis is here with her five tips on managing your personal finances as a college student.

1. Get a credit card and pay it off right away

"A lot of these companies are going to charge an annual fee, but you don't have to pay that annual fee because there are a number of credit cards that have a zero-dollar," she said. "That means no cost to annual fees, and those are the cards you should be looking for as a college student."

Jarvis' rule of thumb when it comes to using a credit card while in college: "You shouldn't spend more than 20% of the limit in a month on your balance ... If the limit on your credit card is $1,000, you shouldn't be putting more than $200 on that credit card."

Another important note to keep in mind: Get into the habit of paying off your full balance every single month.

Jarvis suggests that a good way to do this is to set your credit card account to auto-pay.

"If your objective is to create good credit based on having a credit card, you need to be paying off your credit card every single month to get that good credit," Jarvis said.

2. Choose your major wisely

"The average student is now graduating with almost $30,000 in debt," Jarvis said. "It's important to think about how you're going to be paying that debt off in the future."

"STEM majors -- science, technology, engineering, math -- they tend to be some of the highest paid majors post-graduation, as do business majors," she said. "Humanity majors, on the other hand, don't necessarily have jobs that will ultimately help you pay for that education."

Hiring managers have told Jarvis, however, that the most important traits that they look for in candidates are "a good bedside manner [and] communication."

"Bringing that sound communication to the table, both in person and in writing, will really set you apart," Jarvis shared.

3. Consider your fixed costs when creating a budget

Another pro tip that Jarvis has to offer: Put those fixed expenses on your credit card.

"If you already know the amount of money that you're spending, it's a great way to start building credit as long as you're paying off the bill every single month in full."

4. Complete prerequisites at a community college

"Think about it as, 'I'm going to set a foundation for myself, financially I'll be in a better situation and, in the future, if I do all of these things correctly, I will be able to take even more advantage of spending time in a great college experience, spending time on that first job,'" Jarvis said.

5. Negotiate your financial aid package

Jarvis speaks from experience, because she actually negotiated her own financial aid package at the college of her choice, which found a way to add money to her package.

She also advises presenting the financial aid office at the college of your choice with another financial aid package from a different college or university, if you have one, that's competitive or better.

"Tell them, I will attend your university if you can give me the same deal as this other college," she said.