dk's start with no 2hnder mace skill so i went and trained it from TB.. but a lvl 1 2hnder mace. headed to EPL.
the lvl 60 mobs there dont hit to hard so i started swinging away with my 3.2 spd mace. notice wasnt really going anywere fast. then tried Bloodstrike.. which missess every time at low skills.. and when it misses it doesnt use up a blood rune.. yet you get a weapon skill gain.. so you can turbo button your Bloodstrike and go from about 0 - 300 in less then 3 minutes.
then head over to Northrend and do the same on a lvl 70 mob for the rest
Unholy Presence is a must to make this faster due it it making your GCD's only .5secs.