Hi there and welcome to Iwaku!
I'm Kitti and it's good to meet you.
We have lots of roleplaying, all over! Do be excited!
Since you're new, here are some places you should take a look at these places:
This is where you can sign up for the roleplays found in Modern, Scifi, Fantasy, and sometimes Mature. Generally, they will have you post a character sheet in their thread, a new sheet for each roleplay! You can also start signups for a roleplay of your own here.
This is where you can find jump in games, which typically have no sign up thread. You just start posting!