Your ftp address is going to be your IP address. or what ever your dns is if you pay for that.
to log on to it just type this into internet explorerftp://username:email@example.com
(replace username and pass with whatever urs is)
If you have dynamic ip assignment then when ever you reconnect to the internet the ip at the end will change. If you are paying for a dns address then use that instead of the ip address.