Hey, welcome Sloane to the forum, you will have fun here. Like Laserbee said, PM any veteran and most will be happy to help, I did and they were great.
@jaseth: Only your avatar will update your previous post, not your signature, it will update if the post already had a signature. But if you posted before you created your signature, those old post will not add the sig. I found this out by testing my Acronyms for the Forum post 91 and 92.
Cheers
:beer: