[@Lwunder] To add on what [@NuttsnBolts] said, make sure to check if the RP you're joining is jump-in, apply or full. Jump-in is what it means; no need to apply a character sheet. Apply RPs are where you have to apply and receive the GM's permission to begin posting IC. Full RPs are RPs that aren't accepting character applications at the current time. Make sure to check with the GM too, as most have their own specific rule sets for RPs too.

Anyway, enough informational chatter, welcome to the guild!