How do I get into a sever that's full?

To get into a full server, all you need to do is click on the one you would like to go to on the list.. I personally choose Aldan.

When it says this.. Click "Ok".

After you hit "Ok" you are in Aldan! Or the world you chose. Click on a place in the world map! It will take you to wherever you wanted to go in Aldan or the world you chose!