I'm trying to set up my avatar. I don't believe I've managed, although I think I've got her dressed. I cannot figure out how to put lips or a nose on her, and I don't think she's visible. Could someone be so kind as to walk me through doing these things?

Just go to the Avatar tab on the left-hand side in the old wardrobe (I'm not sure how to choose facial features in beta, sorry!) for default faces, or put them on like any other item if you have a wearable set of eyes/lips/etc. There are only a couple of wearable noses though, so your best bet is to use the Avatar menu c:

Ah. I think that's one of the places that loads and loads and never actually seems to load for me. hrm.....

Try a different browser. Internet explorer makes for difficulty in a lot of features on Subeta, but even if you're on another, certain add-ons may be interfering.