If I were in your shoes I would start by taking one class, and that is Marshall Vandruff's anatomy class. I would also look at taking his Composition 1 class as it will be needed for any of your background painting work.
You can take single classes, so you are aware. As far as scholarships, they are possible...you just need to bust hump and get ten images together that show you work hard and are getting your skills down.
The key is to get started drawing and painting and studying at least 40 hours a week, minimum. There is nothing between your pencil and paper but air...which are the words that a friend said to me years ago when I said I wanted to be an animator and he asked what was stopping me.
Go go go!
"Join us in London for the upcoming ConceptArt.Org Workshop. More details at workshop.conceptart.org .