This book is for students and professionals in accounting and business. It covers financial, cost, and managerial accounting, focusing on basic concepts and principles. It also discusses International and Turkish Accounting Standards. The goal is to help readers understand financial statements, decision-making, and the use of New Turkish Lira. The book is divided into four parts: financial accounting, cost accounting, managerial accounting, and problems. Chapter 1 covers topics like book-keeping, financial statements, and accounting principles. It also includes information on current assets, inventories, and fixed assets based on IAS and TMS.