Ah, your post date exceeds my own, so a regular welcome here just won't do. It'll now be a special one.
I am someone who posts humongous welcome posts. To start off with things, you'd be wise to read this, so you don't get in trouble for doing something you had no idea about.
Also a thing to be aware of. It had dimmed down lately, but you'd be best prepared for everything. Don't be offended if a number of people flame you, it basically means nothing. Why they're allowed to is beyond my understanding.
Don't be offended by fumanchuu and others not being afraid to hide their sexuality, they just like a place to say it seemingly. Use the search button to find answers to questions that you might have. Who knows, it Might have been asked already. That helps avoid people from flaming you or dumbing you down.
Follow the rules..and don't join the flaming crew. If people say something, that relates to an incident that might HAVE happened in the past on this forum, you might be like "what are they talking about." Suggest you get briefed about "Important stuff" so as you don't repeat something people hate.
Now, a recent issue that has come up is that if you happen to get into a fight with another member, try to not let it get too out of hand. (Ya, it's the internet, but you wouldn't believe all those that have had this problem).
It is awesome that you are willing to learn to use rm2k3 later on. When you ask questions, try to use the search button, you'd be surprised at how many people ask it. Read the fine RXMP Faq, and if your question is still missing, ask about it. There are rules in more sections, so it'd be wise to read through.
That's about all I can say, go do the foruming.