They will want you to sign something before they start bringing people around, the contract is fairly standard.
But you will want any exclusivity clause removed and check the details, not just how much the buyers pay them but the seller too and remember everthing is negotiable.
A good estate agent will walk you through additional costs and if you are dealing with a few estate agents things will become clearer as they get repeated over and over and of course some are better than others.
No, have to sign contract.
They’ll list your place on their company website.
Find your nearest neighborhood Sinyi, Yung Ching, 20th Century, etc.
Just walk in and chat.