If your going to places trades, than all you need to know is the dollar risk of your stop and for long term equities, say a rule to never have more than 5% of your capital tied up in one stock. In options, Id say never have more than 2% of your capital tied up in one option trade. Unless you do spreads.
Why exactly do you need the book for? Monte Carlo is like Poker hand probability, but your never getting the same hands in trading, I wouldnt bother With it, though I have a simulator around from when I thought that knowing monte carlo would be useful.