How do you split scenes? Change speed of film? Add music? Add voice over?

The first thing I am going to start with is how to split scenes. First you have to right click, then go to the thing were it says split scene. Now you no how to split a scene.

Now I will teach you how to change the speed of the film. First you have to double click on the scene you are trying to speed up or slow down. (if it says convert, press it) then there is a bar that has a ribbit and a turtle. to slow it down drag it towards the turtle. Do the opposite if you want it to go faster.