Here is a short video by a retired real world 777 pilot. He calls himself "Captain Nav".
His videos run anywhere from a few minutes to full flight videos broken down into 30 to 45 minute sections.
His commentary is fantastic, and because he flies the sim pretty much the way he would fly the actual aircraft, it is very informative.
https://www.youtube.com/watch?v=X33yMfaUxYwHope you enjoy.