There are 3 categories of cash flows:
Operating activities → relates to the main activities of the business, inflows = sales and outflows = payments to suppliers, employees and other expenses
Investing activities → these relate to the cash inflows and outflows from the purchase and sale of NCA and investments
Financing activities → these relate to the cash inflows and outflows from borrowing activities of the business. Inflows = equity such as issue of shares and outflows = debt (payments of loans)