YEAH! What he said. I did this once too and was scared for a second (back when I was more of a noob, like yourself). Don't worry. Just remember, Apple keeps things simple, if something happens just think of what you'd want to do to fix it and try that. Keep It Simple Stupid.
Yeah, usually the fix is the most idiot proof method. Microsoft has made people think way too hard on how to correct problems.
If you just think of the most obvious way to fix it, you'll probably be right.