This forum is just fine for any level of questions.
1) Your first question received an answer but you apparently couldn't follow it. Though using f8 wasn't mentioned, the only place you might use Ctrl-F8 in those instructions would be the first step, though there are a couple of ways to create a new mc. All of the steps are fairly clear to follow, so if you do not understand one of them, just ask (and be patient).
2) For a good preloader tutorial, try the following: http://www.gotoandlearn.com/play?id=85