I need help on how to calculate these from yahoo finance's balance sheet please

Revenue growth rate (For past: calculate based on past revenues. For forecast: provide reasonable estimate. Revenue (For past: retrieve from P&L. For forecast: calculate based on growth rates) Net Income (For past: retrieve from P&L. For forecast: calculate based on growth rates, or estimate based on forecast P&L done somewhere below line 115) Depreciation & amortisation expense (calculate based on growth rates, or estimate based on forecast P&L done somewhere below line 115) Tangible and intangible capital assets, carrying amount (For past: retrieve from balance sheet. For forecast: calculate based on growth rates, or estimate based on forecast balance sheet done somewhere Cap Ex (calculate based on above net capital assets and other items) Operating net working capital (For past: retrieve from balance sheet. For forecast: calculate based on growth rates, or estimate based on forecast balance sheet done somewhere below line 115) DeltaNWC (calculate based on above operating working capital and other items) Interest expense (calculate based on growth rates, or estimate based on forecast P&L done somewhere below line 115) tc, corporate tax rate (feel free to change this if you wish) OFCF (calculate based on above items) Revenue growth rate (For past: calculate based on past revenues. For forecast: provide reasonable estimate. Revenue (For past: retrieve from P&L. For forecast: calculate based on growth rates) Net Income (For past: retrieve from P&L. For forecast: calculate based on growth rates, or estimate based on forecast P&L done somewhere below line 115) Depreciation & amortisation expense (calculate based on growth rates, or estimate based on forecast P&L done somewhere below line 115) Tangible and intangible capital assets, carrying amount (For past: retrieve from balance sheet. For forecast: calculate based on growth rates, or estimate based on forecast balance sheet done somewhere Cap Ex (calculate based on above net capital assets and other items) Operating net working capital (For past: retrieve from balance sheet. For forecast: calculate based on growth rates, or estimate based on forecast balance sheet done somewhere below line 115) DeltaNWC (calculate based on above operating working capital and other items) Interest expense (calculate based on growth rates, or estimate based on forecast P&L done somewhere below line 115) tc, corporate tax rate (feel free to change this if you wish) OFCF (calculate based on above items)