in game menu for load, save, quit to main menu scene and volume. also a question on opening scenes

I was wondering if i was possible to have an in game menu (a script I'm guessing) that would alow me to save and load, quit to the main menu or change the volume. I have already made a main menu scene which starts up the only game level I have at the moment (more will be added) I also want to ask how to create opening scenes with a camera that fly about the scene. any help would be wonderful cheers in advance