Before you can make any major purchases in life, you must prove to lenders that you can manage your credit responsibly. The only way to do this is to build up your credit history.
Start small - Lenders are more likely to loan you small amounts of money than large amounts if you have a short credit history. These smaller loans will allow you to prove your credit responsibility and prepare you for larger loans in the future.
Open checking and savings accounts - Opening accounts lets you develop good money-management habits at a young age. Lenders also like to know that that you have a checking account available to pay bills and a savings account indicates that you are putting something aside for the future.
Establish credit with a co-applicant - Taking out a loan with co-signer who has already established good credit allows you to build your credit while providing less of a risk to creditors.