This document discusses working capital management concepts. It defines working capital and net working capital as the difference between current assets and current liabilities. It outlines the key components of current assets, like inventory, accounts receivable, and cash. It also discusses current liabilities, financing approaches for working capital like aggressive, conservative, and moderate, and how the level of current assets and financing methods are interdependent decisions. The optimal level of working capital balances liquidity, profitability, and risk.