If You Haven't Checked Out ReelSEO.com, Now Would Be a Good Time
Hooray! We are not alone in our quest to make nonprofit media less invisible to search. There is a place where people who love to create videos can learn how to help other people find them, and that place is called ReelSEO.com. There is a TON of information about YouTube: its quirks, its changes, what works, what doesn't. There is also great information about creating effective video ad campaigns, accessibilty... pretty much everything you'd want to know about internet video creation and distribution.
They have a great YouTube channel as well. Here is a small sample of the great stuff you can find there:
How To Make An Interactive Outro Slate for YouTube: