To work the modified Magic Loop method to maneuver around corners in the projects in this book, use a circular needle that is a minimum of 40'' (100 cm) long with a very soft, malleable cord. (I like to use Addi Click interchangeable needles because the needles connect to the soft cords with a click rather being screwed on.)
When you come to the end of one section (in the photo it’s the left front), and need to knit around the corner of the next section (the left sleeve in photo), pull your right (working) needle out of your knitting until you have a long enough length of cord to make a loop.
This allows you to continue with your right (working) needle and comfortably knit the stitches of the next section.
After the first few rows, the right angles soften and the yoke transforms from a rectangle to an oval. At this point you will no longer need to pull a loop out, and will be able to work around the curves normally with your circular needle.