Hints on building:-
There are 20 each of two types of spoke---
one goes from the ouside inwards and the other from the inside outwards,
Sort out the first type and where they go in the hub and just fit those and lace to rim, get these tight and the rim running true.
This way you are only adjusting 20 spokes not 40; the other 20 you can slide in a fit easily (Don't work if you do it the other way round!)
When truing find where the rim is "Welded" and mark it as there is always a "Kick" at that point and trying to true it out has sent many a novice do-lally
