I was recommended it by a friend after he told me about such jewels as !!Cat Tallow Roasts!!. Normally being good at learning how to play a game by trial and error in under and hour, I crashed and burned when it took me till my second fort to learn how to move up and down z levels. ( I only found out there was more z levels after I zoomed to a that had run up a hill and then I couldnt figure out how to get back). After that I spent a week or so before the end of year exams reading the wiki and trying to get a fort established without the little guys being maulled by wildlife, starving, dying of thirst, asphyxiation, etc
In my first 'successful' fort (read: got migrants!), I rage quited after my mayor and manager/broker were both one-shotted my a mood-dwarf (at which point I still didnt understand) and managed to kill half my military who were only wreslers. lol
After that I watch CaptnDuck's videos and finally learnt how irrigation worked, struggled with the military, and actually didnt die.
But I'm still learning. I only found out how alerts worked about a month ago, and I'm still going back to the wiki
EDIT: I'm starting the Fortress Defense mod. New gen. Fingers cross. My last fort got up to year 8 without a single goblin getting past my last line of defenses (and even then only one or two even got close.); time for a little more excitment!