If you're unfamiliar with how to upload your video to a hosting platform like YouTube, Matt explains everything and demonstrates the process in this tutorial.
For more about sharing your videos and how to get more views, check out our blog post on the topic.
A quick word on captions:
Foreign language subtitles can be added the same way as was demonstrated in the video for English captions.
The two most common caption or subtitle formats are .srt and .vtt. If you have both, start with the .srt file and check to make sure it looks right. If not, try the .vtt file instead.