If you want to be involved in the community, you could start by making a blog or a forum post. Consider introducing yourself in the Introductions board!
If you need help, see the Regulations. If that doesn't answer your questions, shoot the staff a message over at the Forums.
Please read the File Policy before uploading any images, gifs, videos, or music files. We have a ban on new users uploading images, so if you need help uploading an avatar please see this help page.
I speak for all the staff members when we say we're glad to have you, and hope to see you soon!