Howdy!
Welcome! Lots to do here, lots to see, and lots to learn (especially if you want to run a game.)
Dive the Help, and the FAQs to get up to speed, especially on adult and mature games, and terms of service type stuff.
Be sure also to read the rules posted in each board at or near the top.
Hang out in Community Chat to get to know the place. There are other neat boards for discussing Game Systems, and for Game Proposals, Input, and Advice and Heaven-Game Resources. Hit Wanted-GMs to advertise for a GM to run a game to your liking. (Hey, it could happen - you just never know.)
The game boards here have more features to help a GM be successful than you can shake a magic wand at.
Enjoy!