I ❤ embroidery . [Recommended] most full embroidery stitches video tutorial. Ooh, hoping all these links work, because I've been dying to get into embroidery. LOVE that all these stitch tuts are in same place with handy reference images!
Mary Corbet of Needlenthread has video tutorials on many different stitches. Here's how she tackles the tricky French knot. It's really worth practising this stitch - look at the beautiful flowers in this photo!