How much resistance should steerer have?
The steering is not supposed to have significant resistance. 

Have you adjusted the preload? Set it to just tight enough that there's no play and that's the correct setting. If there's then a bit of drag from grease or seals don't worry about it.

The way you adjust the preload on this type of headset is loosen the stem bolts and then adjust the bolt on the top. Loosen it first until you have a bit of play (the steerer wobbles a little bit in the headtube) and then tighten it until the play has gone but no tighter. Then do up the stem bolts to the recommended torque. You need the top of the spacer stack to be a little bit higher than that top cap for this to work which you can do by swapping out spacers.