well, idf people are more interested then they can post their questions here and I will do my best to answer.
I myself got introduced to the game 4 years back when I came here from india
Now it has become a passion to wait for friday, saturday and sunday. that is when matches are played.
In answer to your question, yes, it is a very physical game with players averaging 15-20Kms. a game in terms of running. Then you have to concentrate on the tactics, and watch out for other players as well because shepherding is allowed legally in this sport. Of course if you are a forward and the shepherding stops you from getting to the ball or making a contest of it then its a foul. Tackling is allowed
the game is often played on fields that are 150-180 yards in length and about 100-130 yardsd wide.
there are 18 players a side with 4 players on the interchange bench.
Players can go onto the bench for rest although many of them play out the game with the key midfielders and on ballers getting time of because of the tougher nature of their position.
The ball is bounced in the centre and the players contesting the bounce are called Ruckman with the area being called the Ruck.
there is a 50 mt. circle each side of the ground and players can mark (catch) the ball with their hands from a kick. the minmum marking distance is 15 Mts.
also a player can mark, then go back and take the kick, otherwise pass it to a fellow player using their fist unlike rugby where the ball can be thrown.
All this time you can be tackled by the opposition player.
if you fail to get rid of the ball, the opposition gets a free kick.
THe points scoring is done on basis of Goals and Behinds.
A Goal is worth 6 points
A point is worth 1 point.
the scoring is done on a goal with 4 posts.
the centre 2 posts form the goal and the outer 2 posts form the behind posts.
So if ball is kicked in between the middle 2 posts then it is 6 points.
outside the 2 middle posts and between the outer 2 posts it is a point.
If a ball is kicked out of the playing boundary it is a free kick for the opposition.
If you have some questions post them and I can answer them