WebProNews had a great article on Tips for Ranking Higher On and With YouTube
Make sure title, description, and tags are consistent and representative of the content
Add location and date as well
Use YouTube Insight
to sculpt the content of your video
Find out the demographics of your viewer ship.
Where those people are coming from
What [...]
If you are brand new to Twitter or are still struggling to understand how to make it useful read this post by Dustin Wax at Lifehack
From Here to Tweeternity: A Practical Guide to Getting Started on Twitter
.