DSquaredSlim

This of bit from the highest Level and Break it down:

For Example, First on Cash flow:

At high level WC Inv could be given in a problem
one level down is broken down to Rev. Inv. and Pay
one more level down they could give you working capital days and haveyou get to $change in inv.

Same goes with P&L:
First level NI,
break it down
NI = [EBIT-Int]*(1-T)
this can go even broken down to Sales, COGS, etc...

It's worth spending some time how the P&L, balance sheet and Cash Flow is broken down. It's an investment that will definitely help u on D-Day

And as Perdition points out...you will see this topic in subsequent readings.

- Guille