Well i'm a DM fairly short and a player for about a Year, i've seen 2 different styles of Dmíng from my friends when i was player:
1: making it up while sitting there, the weirdest situations and EVERYTHING was allowed.
2: Planning everything, reading everything 3 times, if there is a small discussions about a rule, look it op (which takes lots of time..) and the fun Rp'ing wasn't really allowed (like casting a lot of Illusions on 1 person for 1 day, he would smack your ass...
)
well, since i've been a Dm, (i play 3.0 and 3.5 in a mix...) i tried to compromis it all, i know the rules fairly well, and if there is a discussion about a rule, i simply make up a compromis! this has gone fairly well now, but the players want more and more...(lvl 11) i've got 2 players who play almost perfectly, going allong with my story not TOO much f***ing around...but the rest is just doing what they want, not even aware of the story...
i put some reasonable amount of monsters in, and some role-playing, there own choices are sometimes a problem so i have to forbid it sometimes, also 2 players always want to kill 1 player if he doesn't gives his money or something like that, what should i do against it...??