proper paperwork for purchase

Hi Guys

Can you help me out here.

I’m want to buy this house. Here is the story, can you help out?

The house in preforclosure, and a trustee sale is scheduled.
The HO will receive 8K at the time of the contract.
I will pay the late payments and bring mortgage up to date.
The HO will carry the mortgage loan on their name for 1 year.
I will be responsible for the monthly payments.


what kind of contract(s) I need to have signed between buyer and seller?
How do I go about signing the deed, what paper work do I need.
Do I need to send any paperwork to the bank or mortgage co.

My intension is to make minor repairs and rent it out for the time that will be for sale.

Thanks you.