Colleges are releasing a new crop of graduates who will likely encounter a few bumps on the long financial road ahead. That is why MagnifyMoney.com asked graduates from the last few years to map out their biggest money mistakes. You will want to take notes, Class of 2015, so you do not repeat them.

Number one mistake was not saving enough.

“You’re in your twenties, you’re having fun, you spend as much money as you possibly can and enjoy life and then you look at your bank account and you say, ‘Oh dear, there’s nothing there,’" says Nick Clements, co-founder of MagnifyMoney.com.

Whether you are saving for retirement, your first home or a rainy day, Clements says the key is to set up a system where a certain amount of money is diverted automatically.

"Open a savings account, preferably an online savings account that pays a high interest rate separate from your bank, and just set up an automated savings program. If you don’t automate it, it probably won’t happen," he says.

Another big regret is not getting a handle on student loans immediately. He suggests you use the grace period to figure out how much you owe and to whom by visiting sites like the National Student Loan Data System and annualcreditreport.com.

Your free credit report will list any outstanding loans. Also look into ways to lower your payments like refinancing private loans or choosing an income-based repayment plan.

"It’s on you to do it,” says Clements. “No one’s going to call you and say, ‘We’d like to reduce your monthly payment.’"

Finally, millennials have a reputation for being averse to credit cards, which is not a bad thing except when it comes to building your credit score. You will regret that mistake when it is time to get an auto loan or mortgage.

Clements has a simple solution: open one card and set it for one recurring monthly charge.

"For example, you probably like Netflix. You know the young generation likes Netflix. So you have Netflix, you sign up for automatic payment," he suggests.

Every month, that charge goes on your card.  Then he says you set up another automatic payment from your checking account to pay off that balance in full. This establishes a history of on-time payments.

"Within a couple of years you will definitely have a score 750 or higher without doing anything else. And you don’t need to think, you don't need to act, you just need to put that into autopilot," says Clements.