If I were you, I'd do what Brysing said and create a bio for your profile. If you can, try uploading a pic of at least something to make your profile more interesting. Don't let fear be the cause of you to never learn! Here is my advice to you to receive positive responses from people so you will feel welcome to chat and post:
1) Always be polite; never make your requests for information sound demanding. This will strike someone to be angered.
2) Never anger a moderator. They are the people that have the authority here. They work hard to maintain the site and make it a great place for you to be. They are the police of SoM. Stay off their record, but also be nice and respectful always. Never annoy them with mail.
3) Do not claim to be a mythical creature. This is the hugest piece of advice I can give you. If you are looking to roleplay, please find a different site because you will only be tormented in this community. It happens a lot. Either claiming to be a creature or wanting to be a creature without dropping it can give you the "Fluffy" rank, better yet the worst rank you can have. It'll be glued to your profile so everyone can see it. If you are serious, try to steer clear of those topics.