Your credit score (often referred to as your FICO score) provides a snapshot of your credit status. It's determined by a variety of factors, and obviously, you need to understand the components that affect your credit score before you can start to repair it. Although the exact formula used by the Fair Isaac Corporation, which compiles the score, is proprietary and not publicly disclosed, here's basically what it looks at, and how each factor is weighed:
Each time you apply for credit is listed on your credit report as a “hard inquiry” and if you have too many within two years, your credit score will suffer. In general, a consumer with good credit can apply for credit a few times each year before it begins to affect their credit score. If you’re already starting with below-average credit, however, these inquiries may have more of an impact on your score and delay your ultimate goal of watching your credit score climb.