So I finally had a chance to finish the
Beyond Basic Broomstick Lace crochet course by Jennifer Hanson on Craftsy. I have to say that she's a great teacher, and I learned a great deal, including a few new broomstick lace crochet stitches.
And right now, the course is on sale. I'm not sure how long the sale will last, so you might want to take advantage of it before it ends.