This document summarizes key concepts related to consumer credit, including: - Types of interest calculations like simple interest and add-on interest - Tools for protecting your credit like disputing errors under the Fair Credit Billing Act - Consequences of late or missed payments like damage to your credit score - Options when facing debt problems such as credit counseling, Chapter 7 bankruptcy to discharge debts, or Chapter 13 bankruptcy repayment plans - Regulations that aim to educate consumers and restrict predatory practices like the CARD Act