Although rugby union may look a simple game, there are plenty of laws and rules every player - from Sunday league right up to international level - must follow.
Some are simple, others are more complicated.
But you have to be able to understand every single one of them when you are out on the pitch.
You don't want to end up in the sin-bin for bringing down a maul because you didn't realise it was against the rules.
So with the help of BBC Sport Academy, you can enjoy rugby union as it is meant to be played.