French Knot Stitch
French knots are one of the most commonly used knot stitches in hand embroidery and accessible to a beginner.
Colonial Knot Stitch
Colonial knots are fuller than french knots and can be stitched more loosely, if desired, to create a variety of textures.
An intermediate stitch, the pistil stitch is essentially a french knot with a long stem.
Pearl or Coral Stitch
An intermediate stitch that can be used for outlining shapes, the pearl stitch (aka coral stitch) incorporates a knot into the line.