Start up iMovie. When the screen pops up you should choose new project. Give you project a name and then start iMovie. Switch to the integrated camera option found at the bottom of the screen. Press record and you can start talking for as long as you want. Record what you want, then when you want to finish, press the "esc" button on your keyboard. You can then choose the clip that you just recorded, drag it to the bottom of the screen go to file, choose export, then web-stream, then click save. Give it a name, choose where to save it and click export. Then the movie will be on your screen and you can open it to watch it. Then you can send the file in emails.