Hello,
I need 1 BTC loan to pay my debt. What is the procedure?
The procedure would be to ask for a loan in a loanthread or open a new thread asking for a loan... If you post in an active loanthread, the procedure the lender would like to follow will most likely be posted in the initial post.
If you open your own thread, there isn't really a fixed procedure.
Like Erkallys said, you'll defenately need proper collateral, OR you'll need to take a loan from a friend you know in real life (chances of getting a loan without collateral will be pretty hard for you, with your current rank and trust rating)