To get into the muck, simply type connect guest guest at the login screen. (Regular users have characters established, of course; visitors use the guest accounts. If you drop in and discover you like the place, you'll find that character creation is pretty quick and painless.)
Note that visitors do not connect in Gor, but in the Visitors' Center. (We've had several confused guests; let me elaborate that the Chatka & Curla is only a part of the virtual reality system that is FictionMuck.) To get to Gor, type nex gor and arch – this will get you into the main square, just outside the door of the Chaka & Curla paga tavern. If nobody's out there, you can go into the tavern by typing chatka and in – navigating is as easy as typing the direction you wish to go.
When you're done, type QUIT (in caps) and you'll be returned here. If you get confused, just type help. Mucks have lots of features, but are user friendly and pretty well documented. Don't hesitate to ask anyone who happens to be around; folks are friendly and happy to help newcomers get oriented!
To learn about getting a character on FictionMuck, type info registration when you're logged into FictionMuck; it will tell you everything you need to know.
It's true that guests are allowed into the Chatka & Curla, even though guests aren't normally permitted into adult areas on most mucks. Please don't abuse the privilege, okay? So far, we've had very little problem with idiots, trollers, or HNGs, and being reasonable people we're quite happy with it that way. :-)