Out-of-game communication.

Hey guys, I just created a new character, and he's only level 1 for now... How do I get started in the game? Should I just post something? Like, "Silvanis is sitting in this town, and then something happens..." Or is there another way?
And about choosing characters from the beginning. I created this humble half-elf, and then I read about Magnus... :eek: - that's what my face looked like! No, I could also write that I'm Sar-Ilam, returned to the land, and now everyone is doomed, and that I have armor made of pure gold, and that I have a lot of this gold, and that I have a couple of mega-artifacts and angel wings, and that I'm immortal... But I don't think that's a good idea. I hope the GM keeps the situation under control and doesn't let things get out of hand due to overactive imaginations. By the way, there was a suggestion to give such heroes titanic-scale quests right from the start.
And also - I understand that you can come up with abilities from the very beginning?