This document discusses different types of auditing based on the organization being audited, legal requirements, scope, continuity, specialty, and time period. It covers audits of sole proprietorships, partnerships, joint stock companies, trusts, and cooperatives. Statutory audits are compulsory while voluntary audits are private. Internal audits are conducted by employees while external audits use outside auditors. Annual, interim, and branch audits vary based on timing. Specialized audits include cost, management, propriety, and social audits. Continuous, complete, partial, and in-depth audits have different methodologies.