Once you've configured your Encoding Software, you need to confirm that you're actually streaming.
Go to your Youtube Account.
Go to your Youtube Account.
You're streaming!
When you have concluded your stream, make sure you go back into Wirecast and turn off the Stream button.
Your stream will automatically process on your YouTube channel under Video Manager > Videos.
At this point, you can share the URL to the stream or you can download the MP4 to upload to another hosting service (like MyMedia).