Coker rim spokes tension

Hey gang,
I just spent another $20 getting my wheel trued and all the guy did was to re-tensioned the spokes on my Coker.
I want to learn how use the spokes tightener so I can do them myself. Does anyone have basic measurements on how much tension Coker spokes should have?
Also, I read in this forum of some really strong spokes that would fit on Cokers. Would this strenghten my Coker wheel from tacoing? Thanks!