i dont know of anyone getting into that at all.
first of rules, no1 really knows the rusles anyway. but i do have a pdf of the rules in my sig, i think it still works.
what do you need? equipment, well boots. headgear if you want, mouthgaurd, thats pretty much it. you can get sholder pads and stuff if you want but thats up to you.
And all this depends on what position you want to play. what kind of build do you have? are you athletic? or are you a pie eater? this depends on which part of game you will play, ie a forward or a back. what kind of skills do you ahve? can you kick a ball in open play well? can you pass? this depends on where in the backline you could be suited to. are you tall? can you catch a ball? good hands? are you strong can you lift someone? can you throw a ball straight? these could depend on where you would like to fit in the forwards as well.
there is ALOT more but meh