Let's imagine you're attending a school that costs $10,000 per year in tuition, fees, and other costs. You get $1,000 in grants, and have $3,000 saved. That leaves a shortfall of $6,000. You qualify for $4,000 in federal loans, leaving a shorfall of $2,000. That's your finance obstacle right there--two thousands dollars stands between you and college.
You can receive unsubsidized loans, or private student loans, from various sources. Your local town bank may offer special private student loans--always start with your own bank. They know your credit history, and you have a longer history with them so that they can understand your credit risk.
Other financing companies, such as Discover, Wells Fargo, and AAA provide private student loans. The interest rate will be higher, but it can help you to cover the needed difference.
Remember when financing school that you will have to pay any loans long-term. Think carefully about long-term loan commitments, future salary projections, and so forth before taking on large school finance commitments.