How do u work turning rows

hello i am knitting a hooded baby jacket after picking up the 66 stitches round the neck it says work turning rows thus next 2 rows p4 ytb sl1 ytf turn sl1 k4 next 2 rows p8 ytb sl1 ytf turn sl1 k8 i have 20 rows like this i understand the pattern just not the turn part help

P4, move yarn to back, slip 1 stitch, move yarn to front, turn your work as if you were at the end of the row, slip the st you just slipped again, k 4 sts. That’s 2 rows. Next row, p8, move yarn yarn to back, slip 1 stitch, move yarn to front, turn your work as if you were at the end of the row, slip the slipped st again, k8. That’s the next 2 rows. Look at the video on short rows toward the bottom of this page; maybe that will help you understand - http://www.knittinghelp.com/knitting/advanced_techniques/