Learning forum mafia from the net (and not via playing) is almost the same as learning how to ride from books. (You need experience to gain a few required skill.)
Also comparing botc to FM is like comparing cycling to motor riding. (Even if you are good in one it is not garantued you are good in the other, even though the two having similar basic concept. I had a similar mistake, when I first changed from town of salem to forum mafia.)