Buying a car is the fastest way to increase your credit score. Buy here pay here places don't count, they do not report to credit agencies, car needs to be financed by a credit company or a bank. Credit unions are usually easier to get a loan with and often offer lower finance rates. Get a secured credit card, one with a savings account attached to it that gives you credit based on your savings contribution. If you have debt, pay it off as soon as possible.