Drupal 7 - Robust user profiles / Video Sharing, Rating, Promotion : Best Ways to Implement?

Hello!

I am a new user to Drupal, and have spent a few days acquainting myself with the interface, terms, modules, and other various techniques related to using Drupal. I am also currently reading through two Drupal 7 specific books. Now, to business...

As referenced in my title, I am looking for the best way to go about creating a website in which users can create detailed profiles, and either upload or embed their videos to the website, preferably in a gallery. Other users should be allowed to comment, flag, and rate these videos. The better rated videos move up the ladder and will become more notable, eventually ending up on the main page. I would also like for users to make groups, however I want to have some control over these groups. This sounds like a Youtube clone but it will be much more, I just can't detail any of the underlying principles.

I am aware of a few modules that I can utilize, such as Organic Groups, but I really would love some advice from the community! I am willing to learn and try anything thrown at me, though I am not very proficient at coding...

So, what strategy (modules, layouts, fields) would you use in order to make this type of site?

Thanks in advance!