Questions for final cut

1) How do I insert transitions
2) Why is it so confusing
3) How do you edit in effects such as explosions
4) What are the tools down the side
5) What are the tools down the side used for
6) Why are there two screens
7) How do I create a split screen
8) Why does the browser keep a copy of the clips whilst you are registering
9) What does the jog wheel do
10) what does 'trim edit' do