The principles of accounting of commercial organizations are set forth to the extent necessary for a modern accountant to start a successful practical work. The topics of the basics of the accountant's work, assets and liabilities, current accounting work, tax accrual, various types of accounting, etc. are covered. The practical application of "1C: Accounting 8.3" for solving the tasks of entering accounting data and the formation of accounting and tax accounting postings, the formation of payment and settlement documents, documents for calculating and paying salaries, including by non-cash method, the formation and submission of quarterly and annual reports to the tax service, extra-budgetary funds and other government bodies, including through the Internet. In addition to accounting, the tasks of managing the company's cash, calculating wages and mandatory insurance premiums, calculating taxes and many others are considered. For novice users 1C.