Welcome to the board, Gamma.
I see you've already found out how to post a message (duh!

) and replying to a topic goes in much the same way (press the reply button while you're viewing a topic) Smileys can be added by copying the right code from the smilies/legend page into your post (as you've found out as well) and there's also a button that allows you to display your signature (~Gamma in your case)
You can change a sig by editing your profile, and if you want a specific picture or something like a rotating 'Gamma', just ask Saz (he's a mod here)
You can also use some html codes in your messages (just ask if you need help on that)
Apart from that, it's important that you
1) are reasonable and behave (more or less)
2) get all the information you need and
3) have a lot of fun
A word of warning:
Now that you've found this place, there's a 99 percent chance that you'll become addicted and spend more time here than you should, and once you're an addict your mind will go from bad to worse and you'll start posting all kind of silly things.

There's nothing wrong with that from my point of view


but this way you'll know what to expect.
Have a great time here at the Ironworks!
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The last arrow of Legolas kindled in the air as it flew,
and plunged burning into the heart of a great wolf-chieftain.
All the others fled. -J.R.R. Tolkien, The Lord of the Rings