File - Export - Media
Then I can select the format aswell as other options, such as using maximum render quality, this I';m using as tihs is my final video. Not using this would be if you want to do a quick export, the same for the use previews which uses the pre rendered preiws of clips, which makes exporting faster as it doesn't need to render everything.
I can choose the file name and the location, then it will begin exnocding it. Due to it being HD the exporting time can vary.