First of: nope this ain't the right chat (i think?), but i ain't gonna care.
Secondly, you would need to make your own character at the Character Creations thing
Thirdly you would need to ask someone to DM for you, or you could DM for other people.
Fourthly, read the sticky topics, they may contain some useful info about our rules and the way we (at least i) DM.
It really ain't that hard, feel free to ask anyone for advice if you are lost after following this steps.