Chartered Accountants are popularly known as “Auditors”. Auditing in simple words means the process of verification. Auditing is one of the areas where authority is given exclusively for Chartered Accountants. This subject provides insights to the basic concepts of auditing that must be followed in practical scenarios. “Auditing is a melting pot of all other subjects may it be accounting, Law, taxation or even EIS ”.This paper enables you to understand about key areas in auditing such as various types of audit opinion, audit report format, obligations required under various laws, etc. An auditor ought to have expert knowledge of the subject and hence this paper is set as a foundation for practical training & CA Final.