Well you've definitely come to the right place, Welcome to the forum!
As far as your bike goes, start by just giving us as much info about it as you can. For example, is it a 2 stroke or a 4 stroke? Is it already completely assembled? What issues are you having with it? Also, adding a picture of your bike can be a really quick way to get fast help, since most of the experienced guys can spot obvious issues and can tell you what you need to do.