Forgotten everything -- how do I start?

I've been using SmartFTP for a long time, with two different websites that I set up a long time ago. Now I want to set it up for a third website which I've registered with NetNation, and I can't remember what to do first. I know this is dumb, but can someone talk me through the baby steps?

Take a look at the tutorials:
https://www.smartftp.com/support/howto