Wikileaks, though technically not a wiki, provides an easy means to disseminate information that some find it desirable to share against the wishes of those who find it desirable to keep secret. Aside from the morality of the leaking itself, such a service provides a look into the activities of...
Play the tutorials - otherwise, you'll have no idea what's going on.
Crossing roads can make your drivers confused. Lift them over each other instead.
Check that the catchment areas of your goods stores are actually in useful places.