How to stitch the basic Hardanger stitches are illustrated in this video. It includes animated demonstrations of creating Kloster Blocks, Woven Bars, Dove’s Eyes, Buttonhole Corners, and cutting.
Thanks goes to Lorelei Halley who shared a link to this tutorial on Basic Hardanger stitches. Lorelei has lots of very useful instuctional tutorails on her Lynxlace website too including tutorials on pulled thread and hardanger techniques.