Hi Roni. Exchanges are alot of fun. There are many different ones, and the rules might be a bit different for each exchange. But, in the first post, the exchange host would explain what is expected out of that particular exchange. Usually there is a minimum to be sent. You can stick to that minimum or spend more if you wish. There is usually also a theme-example if it is the Christmas Present Exchange, you would send your person a Christmas gift, and wrap it. If you want to sign up for any of the exchanges, you will need to send the requested info. to the exchange host. Once sign ups have ended, they will send you a name, address, and any other info. of the person you are sending to. There is always a send by date. Once you have sent out your exchange, post on the thread so that the host is able to keep track of all mailings. Once you have received your exchange, post on the same thread, and reveal what you had received, and who it is from. There are alot of different exchanges so keep checking back. And, if you have any other questions, feel free to ask!