Adding a webform to a different content type I have an "event" content type.  Now I want to add a Webform to it so that people can request purchasing and availability information. 

I checked my event content type in admin/config/content/webform under Webform-enabled content types but how can I now add the form to my existing content?
Your webform is empty. You need add some fields to the webform.
You can add webform to any "event" node.
Try this: go to your_host/node/node_id/webform and you can see wizard for webform elements!