This will be a Play by Post Roleplay.
Basically here's how it goes. My character posts a short description of my actions, thoughts, and words, your character then replies, and we go back and forth...
EG: My character might post something like this:
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Gunn sat down in the comfortable leather chair behind the desk, thinking about how many times he'd seen Angel in the same position. He couldn't help but feel that he was intruding some how, invading a space that wasn't his. He sighed, considering what the future was going to bring. At that moment, the phone rang, startling him out of his quiet moment.
He picked it up...
"Hello? Angel Investigations... this is Gunn?"
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(it would then be your characters turn to react. You could be calling, or you could be in the next room listening, or you could doing your own thing completely unconnected to me. The most important part is to have fun, be true to your character, and try to tell an entertaining story. Occasionally I can help by dropping in a story point, or plot point to the story, I'll even roleplay bad guys, or other characters if you need it... this is called creating npc's. For now though since your just starting out, concentrate on responding to my character and adding detail about who you are, and what your thinking about. Give it a whirl)
Anyone else who wants to give it a trial run, feel free to post, this is an OOC (out of character) thread so you can post here without worrying about it impacting the story.