Ms. Hudson.....yo are asking some pretty basic quetions. Do a search on the forum about yur problems and you wll find answers there. Also there are video tutorials that I think you will find most helpful. There is a learning curve with MM and the more you want to learn, the steeper and faster the curve. Also use the programs help files and read the user manual...a little at a time so you will get abetter understanding of how it all works.
You can create a song in 5 minutes, but to really understand how it all happened other than clicking and dropping, its gonna take some of your time, but its lots of fun. Good luck