>>661004
You just go inside. You don't even have to say anything to anyone unless they say something to you, which will be "Hello." Just stand in the back and observe everything. Rinse and repeat till you get comfortable with the place. Then you will be on your way as a catechumen. By then you should have gotten to know everyone a little bit, that when you go up during liturgy for the catechumen prayers, you won't freak out.