The admin have already posted the rules there, their easy to read. If you have any questions I'd suggest asking an admin like Petrie or someone.
I've already posted my rp ideas with no interest so I'll not waste anyone's time, but you folks feel free to do that. Though I do think that anybody doing an rp should mention in the first paragraph if the rp thread will be a pure LBT one, with no psychic powers, magic, ect, or if they will allow certain things. I just suggest this since some folks would like to rp only in a pure LBT type of rp setting, and some may like anything and not care to much. But both should have the info right up front. Though I know everyone will disagree.