Summary: Once you've edited your video you need to export it, add some metadata and then upload it to YouTube. But before you do that, make sure that the name of your actual video file is something relevant to the information contained in the video itself. This is because YouTube indexes the file name as well as all the other metadata you include. Doing so will help increase your visibility in YouTube search and is just another bit of insight into YouTube's algorithm for choosing which videos rise to the top.
