Like it is said, Scrum is easy to learn but subtile to exert.
You need to internalise the concepts so you can apply them and come back with your own solutions when facing every day goals.
I got it on the first shot, it was not easy, not because of the content of the questions but because sometimes I need to handle my stress.
Even with stress having working with great resources I was able to concentre and look for the right answer or even rely on automatisms.
So here are my resources :