Download the Server-Files from teamspeak homepage and unpack the package in any directory you want.
Start the ts3server_win32.exe
Please note the username and password!
Connect via the teamspeak3-client to your server, just with entering "localhost" as Ip- dress.
To get admin-rights on your server you have to open the /log directory and to search in the text-file for "token". Copy it and go on "rights -> enter token" in your client and paste the token. Now you are having admin-rights and now you are able to change your server.
For ports look at /doc/server_quickstart
Maybe you should make a dyndns-account and search for a dyndns-updater, because you haven't to impart your always changing ip-adress.
Have fun with your TS3-Server