There is no need to make a tutorial for this site because it just a scam site, first thing that they dont even dare to show that they really hold 1,624 btc on their address, that means they are not holding that much of coin. To support this they even make and altcoin which refer to btc and this is make sure that they dont have it at all. The second thing is people winning there but no one ever claimed their money yet, nor OP mentioned it anything. So this is sure a scam site, better to get out from this site
Not necessarily a scam but nobody is going to win that much anyway, Nitrogen used to allow parlays of 20 teams to any maximum (sometimes to non-existent number of coins", they fixed that from a while)
The most important "suspicious" thing here is: Absence of provability fairness
adding that to the unbelievably bad odds of lotto, OP's signup bonus isn't actually 50 mbtc but might be one or two with a high rollover since you need to hit a prize to withdraw.
And no sane person is depositing real mBTC's with odds like these in my opinion.
google 6/49 and see the odds of hitting 4,5,6 numbers combined. also adding the absence of any verification I would say this is a total waste of time, even for those trying to abuse it.
I would call it a failed project or even a failed scam.