Hi Moxie,
Already wrote to you about this on Discord, but in case you do not see it and I can't catch you there:
The servers do not have a "enter" button. You just press on the thick line where it is written "Orwen" and it will deploy all the channel available to you in Orwen.
Most, if not all our guild activities occurs in the channel Calpheon 02 but it is quite easy to hop between channel for that.
***Please note that if you do create characters on Eden or Uno, they will not be available to you on Orwen. As we speak, GSCH presence is only on Orwen.
I hope it helps! Let us know if you need help with anything!