For all the information available to info-seeking fantasy football players, nothing helps the preparation process quite like a mock draft.
Sure, it's critical to know rankings, sleeper candidates and the boom-or-bust types who populate do-not-draft lists. But all of those items are subject to change based on the actions of your specific draft room.
If five teams take quarterbacks in the first two rounds, every other signal-caller's rankings must be adjusted. That doesn't mean you must always overreact to what's happening around you—if everyone else decides kickers should go five rounds earlier, let them—but you should be familiar with contingency plans for different scenarios.