My best advice is to remember that over a PbP game, it takes a while for things to be posted sometimes. Also, there are not any verbal or visual cues to go with when you are in a online game. Just be patient, and don't take anything too seriously without checking it out with the person in question first. Finally, while it may speed some things up, unless you have permission to do so, don't respond for another person's character. That can piss people off real fast.I'm also done and waiting ^^ Kinda nervous since it's my first time playing, feel free to point out anything I do wrong!
In the long term, I love the PbP scene. It gives time to think about your response to something, and lets a player or storyteller to be able to look back at previous posts to make sure you remember something correctly. Great storytelling tool.