I've just pm'ed you a simple hat on dpns which can be used with any yarn for any size head. (The way it's charted won't work well in the format of this reply box.) I'd print it out and circle the numbers for which yarn and which size you're making.
And don't worry about being confused at this point. It takes time to figure it all out. No one's born knowing how to do this-- we all went through it. Good luck!