Why do you need someone to show you the calculations? All of the important numbers including principal, fees, points, interest rate, and amortization schedule fit on a short PDF. You can verify the calculations yourself on a pocket calculator if you want, it's like grade school level arithmetic.
There are different sorts of loans that you can do in different ways. It certainly does not fit a short pdf (I am not in the US). So it’s nice to have someone walk you through that consequences of the different choices.
