Aggie,

I don't know if you have ever visited the Large Format Photography web site of Q Tuang Luong, but it is one of the best information sources available.
He has articles outlining 2 different methods of focusing the view camera. I have used both and they both work. Which one you use depends on the type of camera you use and the kind of subject matter. Here is his site:
http://www.largeformatphotography.info/