Here is a method similar to the one I use. It's a speed modeling video, so there are no instructions, but you can see the way it gets built. The main tools used in this video are Move, stretch, rotate, extend, make poly, and connect.
There are many ways to make a head in Lightwave. Finding the way that best works for you can take time.
Also try just searching youtube and google for lightwave head modeling, or Lightwave character modeling, lots of stuff out there.
Matt Stewart
www.provismedia.com