Now that you have agreed to the terms and the date of the closing. It is wise for you to have a title search and order a title policy. This instrument will protect you from outstanding leans and surprises from someone showing up at your doorstep claiming ownership of the property you bought.
The title company will basically help you tie up loose ends and will handle the closing process at the same time.
You will receive a closing statement that will explain you final cost of purchase.
You will have time to review and prepare to pay the balance indicated. You may transfer the funds directly to the title companies account via wire transfer. This way you will have both clear funds and a receipt at the same time at the closing and need no cash or checks to deal with.
Just one more thing once you closed there is little room for overlooked mistakes.
Seek the advise of the closing agent if there is something you don't understand.