OMG, don't use Nurbs!!!!

Use bevel plus. You may have to go an move some vertices around if they bevel weird, but soooooo much better than that tutorial. I despise Nurbs

If it bevels in the wrong place you may have to do each seperate curve by it self. I would just drag click over the whole set of curves making sure to select the outside ones first. If it bevels funny then undo then look at the cv on the cuves where the weird bevel took place click on the vertices one by on in the problem area and youll see thatone or two are out of place. just move it back into it's proper place on the z or x plane. dont move it y. Some times when you mak a curve the cv's jump out of order where it should be 1,2,3,4,5.... it will actually be 1,2,4,3,6,5 just move them back in order. You can tell where it should be by the part of the curve that highlights when you select the cv.

I always choose by poly count around 1000 should work fine.

You can have nurb outputs or poly's. If you use polys then just hit combine and poof it's all one.