You can easily add intro, outro and cutscene sequences to your game. There is no specific function to do these, but using the provided animation and script commands you can create almost anything you might need.

Normally, the game will start in room 1. This is defined by the starting room number of the player character. To change it, open up the player character's Character pane, and change the StartingRoom number in the property grid.

TIP: The starting room facility is also useful when testing your game - you can make the game start in any room, at the point where you are testing it, rather than having to keep playing the game through to get there.

Cutscenes are created using the normal animation script commands, such as Character.Walk, Object.SetView, and so forth. I would suggest you leave this until you are more comfortable with AGS, and have some experience of how to use these functions.