Sure, I can guide you on how to study each of the subjects in your B.Com course.

Office Management:
1. Understand the basic principles of office management
2. Learn about office functions and procedures
3. Study about office equipment and technology
4. Familiarize yourself with office records and filing systems
5. Understand the importance of communication in office management

Business Statistics:
1. Learn about the basic concepts of statistics
2. Study the various types of data and data collection methods
3. Understand the different measures of central tendency and dispersion
4. Learn about probability theory and probability distributions
5. Study statistical inference and hypothesis testing

Business Organisation and Management:
1. Understand the various types of business organizations
2. Learn about the functions of management
3. Study the different management theories
4. Understand the importance of planning and decision-making
5. Learn about organizational behavior and human resource management

Financial Accounting:
1. Understand the basic principles of accounting
2. Study accounting concepts and conventions
3. Learn about the different types of financial statements
4. Study the accounting cycle and the process of recording transactions
5. Understand the principles of inventory valuation and depreciation

Business Economics:
1. Learn the basic principles of economics
2. Study microeconomics and macroeconomics
3. Understand the concept of demand and supply
4. Learn about market structures and competition
5. Understand the role of government in the economy

Business Regulation Framework:
1. Study the various laws and regulations that govern businesses
2. Learn about company law and corporate governance
3. Understand the principles of contract law
4. Study the laws related to intellectual property rights
5. Learn about consumer protection laws and competition law

In addition to studying the above subjects, it is important to practice solving problems and answering questions related to each topic. Make use of textbooks, notes, and other study materials to aid your learning process. Also, stay up-to-date with current events and trends in the business world to enhance your understanding of the subject matter.