Counting Rows in k2, p2 ribbing

I am interested in locating a how-to video for counting rows when knitting in k2, p2 ribbing. Please advise by posting a link in response to this question. Or if you have simple step-by-step instructions that you can post, I would appreciate your help. Thank you.
S. Miles

Welcome to KnittingHelp!
You can count either the knit or the purl rows (or both).