I searched but didn't see anything. This Kotaku 'Tips for Playing Rocket League' article has some great advice for those struggling with the game:
http://kotaku.com/tips-for-playing-rocket-league-1719381327
See, especially, for the love of all things holy, 'Don't Ball Rush'.
Just read this too, these are some really good tips for beginners. Really good indeed. Only thing that's wrong is that you don't get points for demolishing opponents... I can see how it feels good though