AUDITING:
1.Chapter-1: Introduction
2.Chapter-2: Classification of Audits.
3.Chapter-3: Audit Programme.
4.Chapter-4: Audit Evidence.
5.Chapter-5: Internal Control, Internal Check and Internal Audit.
6.Chapter-33: Introduction to statements on Standard Auditing Practices (SAP) AAS.
8.Chapter-10: Verification & Valuation of Assets and Liabilities.
9.Chapter-13: Appointment, Remuneration, Rights and Duties of an Auditor.
Chapter-15: Auditors Report
Amar Preet Singh Sijher's CLA Blog 
Very Helpfull website
I DO UNDERSTAND THE REVENUE & RECIEPT CYCLE IN AUDITING, BUT IM LOST IN THE BUSH REGARDING THE RISK ASSOCIATED WITH THE INVOICING AND RECODING FUNCTION UNDER THE RECORDING OF RECIEPT