Exporting your finished video

File > Export > Quicktime Movie

Name and  choose location.
Settings: Current Settings
Include: Audio and Video (unless of course your video in silent, then you can just include video)
Markers: None
Make movie self contained is checked.


You may also like to export a version specifically for the web (eg.  your blog or vimeo), so it will need to be compressed into a smaller file.
File > Export > Using Quicktime Conversion
Name and choose location
Format: Click on Options.
Video Settings > Compression type > H.264
Frame rate: Current
Compressor Quality > Best
OK

Uncheck prepare for internet streaming.
OK