I had no idea what to do with an IP, name, and password. The first things I tried were a VNC (screen sharing) connection using standard OS X (which didn't work), then tried FTP (didn't work), then tried going to my IP address in a browser and checking for some sort of cpanel (didn't work).
After finally trying SSH in Terminal, then using SCP, finally realized that I could also connect via SFTP to transfer my files. Took me 30 minutes to figure this all out, but now I'm good.
Suggest "use these settings for SSH, SFTP, [whatever else] to connect to your droplet" in the email to at least guide somebody who's never set up a VPS before. Thanks!