Help Using the BP Social Theme

1) Is there user documentation to go with this theme?
2) Where do I find and configure the registration page. Are there short codes I'm supposed to use?
3) I've put a youtube video in the intro settings, but when viewed on a mobile the video doesn't resize like the rest of the responsive elements on the page.
4) How would I add rel=0; to the youtube video command so as not to show other youtube vidoes once my video has finished.
5) Is it possible to have the home page set to a page but still have the intro section at the top of the page?