Here are a couple of youtube video’s that go through the basic functionality of the programme.
Another piece of software that you will be using for your sound piece is called Mozilla Popcorn. It allows you to mix video, sound with other elements within a project. You are able to mix images, text, pull in twitter feeds and google maps. Below is a simple tutorial that takes you through the basic use of the programme. In order to use popcorn you need to register with Mozilla.
Another link to a non video text based tutorial from Miriam Posner