Hello, new person. Tips wise, get a profile picture, something not too generic. Avoid anime pictures, or attempts to be cool, but try memorable. Clearly, a snake and a joker GIF is taken, but there's other options. If you're going to pop around the forums, don't get upset easily and speak your mind and you should be fine.
If you plan on writing, while there's a whole bunch of advice people other than I can give you, all you really need to know is that you shouldn't write because you want to be a writer or have storygames, but rather because you want to tell a story or make a world you've been imagining. Also, the main difference between a shit story and a good one is pretty much just hard work. Oh, and finally, take criticism on board rather than personally, and you should be fine.
Anyhow, enjoy the site, new blood, hope you stick around.